STS Turbo in Camaro SS at Exotic Performance Plus

[Exotic Performance Plus]

http://www.exoticperformanceplus.com/projectCar.php?car=32

http://www.exoticperformanceplus.com//images/projectCarImages/Scotts%20Camaro%20pic%2043.jpg


Hey, I've been a doubter of these kits for quite a while, so I'm pretty skeptical. A local guy wanted one so we're doing the install, along with rebuilding the engine with Compstar rods and Diamond pistons, and a comp cam. Check out the 50+ pic's, we'll be firing it up real soon. Bob

[Killer_bluebird]

Looks Sweet! Let us know once you strap it to the dyno.

[needmorepwr]

Thats a pretty odd setup. What is the advantage of having the turbo at the rear of the car? That is one heck of a lot of tubing going everywhere.:think:

[Liquifire]

did you do any head or cam work to this car?

[Hurley711]

Turbo at the rear of the car would bring in cooler air from underneath the car instead of hot engine bay air, that's one benefit

[gophaster]

Wow, I have heard of these "remote" turbo setups in some oldschool turbo books but I've never actually seen one.... and on a modern car to boot :rubeyes: Looks like a pretty clean kit but the advantage of having the turbo closer to the exhaust ports is that, there is a lot more energy to drive the turbo harder and spool it faster.

I would think the boost threshold will be pretty high so you probably won't see boost until higher rpms than if the turbo were closer to the motor. I'm very interested in seeing the numbers you get out of this thing :Popcorn:

Keep us posted.

[gophaster]

Also, will be pretty weird to hear the turbo spooling from the BACK of the car ;)

Ok, now I feel stupid...just visited the sts website, looks like they have been doing this for some time now. Very interesting stuff. I definetly want to see what you guys get from this setup.

[Liquifire]

did you do any head or cam work to this car?
Bob......head work done????:think:

[predator]

Wow, I have heard of these "remote" turbo setups in some oldschool turbo books but I've never actually seen one.... and on a modern car to boot :rubeyes: Looks like a pretty clean kit but the advantage of having the turbo closer to the exhaust ports is that, there is a lot more energy to drive the turbo harder and spool it faster.

I would think the boost threshold will be pretty high so you probably won't see boost until higher rpms than if the turbo were closer to the motor. I'm very interested in seeing the numbers you get out of this thing :Popcorn:

Keep us posted.

How is there more energy in the exhaust since its back further?

and the "so you probably wont see boost untill higher rpms than if" that really doesnt read right...

[gophaster]

Read my post again ;) I said there is more energy closer to the exhaust ports at the motor :) Less energy way back in the rear of the car.

"advantage of having the turbo closer to the exhaust ports is that, there is a lot more energy to drive the turbo harder and spool it faster."



Less energy in the back of the car so a higher boost threshold unless the hotside of the turbo is smaller to compensate which is how I think STS makes up for it...by running tighter a/r ratios on the hot sides of the turbos.

"I would think the boost threshold will be pretty high so you probably won't see boost until higher rpms than if the turbo were closer to the motor."

[predator]

got ya i read it wrong... i would say it was late, but it wasnt so i'll just call for a muligan on that one

[02z28ls1]

They did an install of one of these on Two Guys Garage a couple months ago.Don't remember the exact numbers but it made 100+ h.p. at the rear wheels.From what I've read the advantages are that the long tubing cools the intake charge and the turbo doesn't get as hot due to the exhaust temps being lower.There isn't any lag because the intake tubing stays pressurized.They didn't do any tuning to it (everything was left stock otherwise) and it didn't affect the driveability and power output was impressive.The exhaust pressure would be the same at the tailpipe as at the exhaust ports-where's it going to go?-(IMO) -Looks like you are installing the optional intercooler -they didn't do that on the TV show if I remember right.

[gophaster]

I hear ya predator ;)

02z28ls1, I'm definetly not knocking the setup. They seem to be getting great results. Wish I would have caught that episode. I visited the sts website and watched a couple vids (the GTO the have is wicked). It's actually a very interesting setup. I agree that the turbo itself should run cooler because by the time the exhaust gasses reach it it will be cooled down. But, I think that this cooling does take away some of the energy though. Which is one of the reasons why traditionally, turbos are mounted up front. I think that it can be made up for by choosing the correct A/R ratio on the hot side of the turbo.

I hope ExoticPerformance posts up his results as I am very interested to see how much power they acheive.

[peter@aps]

Thats a pretty odd setup. What is the advantage of having the turbo at the rear of the car? That is one heck of a lot of tubing going everywhere.:think:

The only real advantage that I can see is the possibility of getting that turbo system past the California air resources board, the CARB office states that the stock cats must be retained in the stock position to apply for a CARB exempt order for any turbocharger system. On that basis, the rear mounted turbocharger approach which retains the stock cats in the stock position makes a lot of sense. From a strict enginering perspective the rear mounted turbocharger position is definitely compromised though that's with all things in life.:) In a perfect world the closer you position the turbochargers to the exhaust ports will yeild the best possible power, torque and engine response.

Peter

[finishline]

Lookin good Bob!

[02z28ls1]

I agree it's a really different way of doing turbos-but with the emissions laws and packaging concerns of todays cars it makes sense.From what I've seen the results are impressive.Looking forward to seeing the pictures and results on this-Hurry up guys!!!!!Oh and one question-don't they have different boost level controls available?What boost level are they running here?

[predator]

The exhaust pressure would be the same at the tailpipe as at the exhaust ports-where's it going to go?-(IMO)

i would think the lag would be greater due to the compression of the exhaust... which is a gas... not an incompressable liquid... it would be like a spring effect... you would get more lag.. but the same energy...

just uppon hard acceleration the gasses in the ehaust woudl compress and the "unspring" with time...

same energy, but more of a a lag-burst than you would have right after the headers.... and this effect would be doubled by the return tube to the motor... just as much boost but more of a wave that travels to the intake than a steady pressure gain... Just my thoughts...

[needmorepwr]

very interesting. Maybe I could put one on my truck...

[Havoc_S]

Also, will be pretty weird to hear the turbo spooling from the BACK of the car ;)



Here, check out Eds GTO.03 at http://www.imranxp.com/ls2gto/

[BrandonDrecksage]

nice..are we gonna get a nice video like we did with the TT zo6? :)

[Whatever]

I really don't see the advantage to that. Aren't there companies making "normal" turbo kits for the LS1. I'm interested in seeing a dyno graph. I'm also curious as to when the car will make full boost and how bad the lag will be with all that piping. I bet finding a boost leak would be a major pain in the butt...

[BrandonDrecksage]

I really don't see the advantage to that. Aren't there companies making "normal" turbo kits for the LS1. I'm interested in seeing a dyno graph. I'm also curious as to when the car will make full boost and how bad the lag will be with all that piping. I bet finding a boost leak would be a major pain in the butt...

they've been around for a couple of years and have proved themselves already...i find it funny when people still doubt the kit. it makes full boost between 2500-3000 rpms. their are traditional mounted turbo kits, but the places go out of bussiness everyother month. advantage to it is...cost, less heat in engien pay..near stock looks under the hood, in most places it will pass emissions easily because its after the cats and I believe they are trying to get a carb number for cali to make it 50 state legal. There are a few gtos running in the 10s with it.

[Blackbird]

it is carb legal now.

happened a few weeks ago.

[Exotic Performance Plus]

I've added many more pic's. Check them out! Bob

[Whatever]

in most places it will pass emissions easily because its after the cats and I believe they are trying to get a carb number for cali to make it 50 state legal.

That doesn't really make any sense to me. The turbo may be mounted after the cat's but it's still pumping the air back up to the intake, so it still doing the same thing as a turbo that is mounted in the engine bay. Why would the position of the turbo effect emissions? The engine is putting off the same exhaust gases regardless of where you mount the turbo.

[BrandonDrecksage]

That doesn't really make any sense to me. The turbo may be mounted after the cat's but it's still pumping the air back up to the intake, so it still doing the same thing as a turbo that is mounted in the engine bay. Why would the position of the turbo effect emissions? The engine is putting off the same exhaust gases regardless of where you mount the turbo.

because cats need heat to work..when you have a turbo...that sucks up most of the heat...which in turn will either make the cats less effective..or take longer to get up to temp. plus, most turbo kits don't keep the cats when you install them. Also, in cali..the cats can't be moved from their original postition...its sort of hard to not move the in most turbo kits because of the placement of the turbo.

[02z28ls1]

For a kit to be emissions compliant it either has to leave the emissions equipment as built and certified-or it has to go through the expensive and complicated testing that the OEM factories had to do.Nobody in the aftermarket has the money to do that for the limited market that they sell to.By not moving or removing the emissions equipment it is much easier to get it certified.The cats need engine heat to heat up quickly and start cleaning the exhaust ASAP-that's why they are designed as close to the motor as possible.New pics are great-waiting for you to fire that puppy up!!

[koolaid_kid]

I have an STS in my 97 LT1. It has its pluses and minuses. I would like to clear up a few things, if I may:
Exhaust gas has 2 types of energy, heat and pressure.
The heat is dissipated during the passage down the exhaust, this is the lost energy. The pressure must remain the same (remember, an engine is a glorfied air pump) unless you have an exhaust leak.
Yes, finding a boost leak is a bear, that is why STS recommends welding the pipes (but only after you ask them).
Yes, hearing the wastegate let off behind you is odd.
Benefits include a less crowded and a cooler engine bay. Lag is non-existent. I know, I drove today and enjoyed the instant power on-demand.
Shortcomings include a very noisy oil pump (it is bolted right behind you) and the intake down next to the rear tire.
Also, they interfere with subframe connectors, which cannot co-exist.
Clearances are extremely tight with all the plumbing, especially the intake.
If you want to run 5-8 lb of boost, it is an adequate kit if you can put up with its shortcomings. However, STS will eventually tell you that if you want to run higher boost levels, say in the 15 lb range, go with a front.
All in all, it is a decent, but not earth shattering, noisy kit.
kk

[Bad Mojo]

I have an STS in my 97 LT1. It has its pluses and minuses. I would like to clear up a few things, if I may:
Exhaust gas has 2 types of energy, heat and pressure.
The heat is dissipated during the passage down the exhaust, this is the lost energy. The pressure must remain the same (remember, an engine is a glorfied air pump) unless you have an exhaust leak.
Yes, finding a boost leak is a bear, that is why STS recommends welding the pipes (but only after you ask them).
Yes, hearing the wastegate let off behind you is odd.
Benefits include a less crowded and a cooler engine bay. Lag is non-existent. I know, I drove today and enjoyed the instant power on-demand.
Shortcomings include a very noisy oil pump (it is bolted right behind you) and the intake down next to the rear tire.
Also, they interfere with subframe connectors, which cannot co-exist.
Clearances are extremely tight with all the plumbing, especially the intake.
If you want to run 5-8 lb of boost, it is an adequate kit if you can put up with its shortcomings. However, STS will eventually tell you that if you want to run higher boost levels, say in the 15 lb range, go with a front.
All in all, it is a decent, but not earth shattering, noisy kit.
kk

Just to clarify on what Koolaid said :)

It doesn't interfere with the passenger side subframe connector, and the piping will weld in place of the driver's side connector - acting as a subframe connector itself. 5-8# is the limit for the base kit, throw in an intercooler or meth and you can push 10# with little issue and some have taken the kit to over 700hp with even higher boost levels.

For a car that will see more street duty than track duty, the STS is hard to beat. If your goals are primarily to dominate at the track with a 9-second car, it's probably best to just go front mount.

[02z28ls1]

OK-if it loses heat energy-how does that effect turbo operation for the worse?Can you isolate the oil pump with bushings or something to quiet it down-how loud are we talking about-obnoxious or slightly annoying?I was always viewing this as a streetable thing-a 9 sec. car would not be emissions legal where I live.You could always go to a rollcage instead of sub-frame connectors-like a 4 or 6 point set-up.

[koolaid_kid]

[QUOTE=Bad Mojo]Just to clarify on what Koolaid said :)
It doesn't interfere with the passenger side subframe connector, and the piping will weld in place of the driver's side connector - acting as a subframe connector itself. QUOTE]

As Bad Mojo stated in a round-about way, you cannot put a subframe connector on the driver's side. If you believe that the piping will be as good as a subframe connector, I suggest you but two sets of pipes and save the money from the subframe connectors.
And also, call the vendors to order a passenger's side subframe connector. Only. Let me know how it goes. :lmao:
kk

[Zboner]

what is this kit? i see this car once a week

http://memimage.cardomain.net/member_images/8/web/2084000-2084999/2084495_62_full.jpg

[koolaid_kid]

OK-if it loses heat energy-how does that effect turbo operation for the worse?Can you isolate the oil pump with bushings or something to quiet it down-how loud are we talking about-obnoxious or slightly annoying?I was always viewing this as a streetable thing-a 9 sec. car would not be emissions legal where I live.You could always go to a rollcage instead of sub-frame connectors-like a 4 or 6 point set-up.

1) A front mount turbo will convert some of that heat energy into turbine power, slightly increasing the efficiency of the turbo.
2) The pump is already isolated by rubber insulators. It is very annoying inside the car, which acts like a sound amplifier. It is so loud outside the car that it can easily be heard over the unmuffled exhaust. Clearly the loudest part of the entire car. It has its own section in the troubleshooting section, titled "Oil pump is noisy", so it is a known problem.
3) It is very streetable, if the car was streetable before. I would not hesitate to drive my car across the county tomorrow.
kk

[02z28ls1]

It's always great to hear from someone with first hand knowledge-I never heard about the noise issue from anywhere else before.I'm thinking it would freak out the non-gearhead people I know (the majority it seems like) who would be less impressed w/the turbo because of it . I could probably live with it cause that would be the price to pay for performance. Is there any possibility of enclosing it in some kind of insulated box to reduce the noise some? I haven't actually seen an installed unit .

[koolaid_kid]

02z28ls1,
I never heard of it either, before owning one. I even read the mag articles, which never spoke of it. When I picked it up from the installer and said something, he said (paraphrasing) "Yeah, they all do that".
The reason I picked the turbo over a supercharger was that I could hear the whine of the 'charger. I have a sleeper, and I did not want to give away the fact that I had a power adder. Oops.
Yes, a non-gear head (a.k.a. gf) is dismayed at the sound.
But the performance is quite good.
My next task is to do as you suggest:
Figure out a way to isolate the noise (it is probably a combination of electric motor whine and impeller vibration) and then cool it, since it will no longer be exposed to the elements.
Once I overcome this obstacle, I will be pleased. I am just irritated that STS did not do this work up front as they should have done.

[Bad Mojo]

[QUOTE=Bad Mojo]Just to clarify on what Koolaid said :)
It doesn't interfere with the passenger side subframe connector, and the piping will weld in place of the driver's side connector - acting as a subframe connector itself. QUOTE]

As Bad Mojo stated in a round-about way, you cannot put a subframe connector on the driver's side. If you believe that the piping will be as good as a subframe connector, I suggest you but two sets of pipes and save the money from the subframe connectors.
And also, call the vendors to order a passenger's side subframe connector. Only. Let me know how it goes. :lmao:
kk

I already had a set of chrome moly Spohn SFC's in place, just had to ditch the driver's side :(

I haven't noticed any decrease in stiffness or handling though, which is good.

[koolaid_kid]

My apologies for hijacking the thread. I had only hoped to dispel some of the misconceptions about the STS system.
There are some excellent pics at:
exoticperformanceplus
It appears as though they overcame some of the flaws of the STS setup. Excellent job. I especially like what they did with the tailpipe and the wastegate flange; I will probably borrow those ideas myself.
All-in-all, very fine work from Exotic Performance Plus.
kk
I am not allowed to post the URL, but go check it out.

[koolaid_kid]

I already had a set of chrome moly Spohn SFC's in place, just had to ditch the driver's side :(

I haven't noticed any decrease in stiffness or handling though, which is good.

That is a good thing. I got the same answer from STS that you did, which suggests that the intake pipe can serve as a stressed member of the frame. Having taken both Statics and Dynamics in college, I suggest this is inaccurate information.
kk
p.s. What I would really like to see is STS work with a SFC designer to build a set that will work with the STS system.

[Contra[SS]]

Wow, I want to know what that sounds like! (Haven't gone to the website yet, will after this)

[Contra[SS]]

I've added many more pic's. Check them out! Bob

WOW, i mean wow... that's an awesome job you guys have done and I love how you document it so well. Can yo upossibly get a sound clip on the site of that ls1? I really want to know what that beast sounds like with a turbo as a muffler!

[Exotic Performance Plus]

Will do! Thanks for the compliments! Bob

[NYSS Guy]

I have this kit as well, had it for over a year. Koolaid, I'm not sure why your pump is that loud, but mine isn't nearly that loud. I can hear it when I'm starting the car (it's hooked up to the same lead as the fuel pump), but past that I don't even notice it. As Bob is doing this buid up, I am in the middle of a 370 iron block, that will hopefully see 15-18 psi from a GT70. The car should be a beast. :firedevil

[koolaid_kid]

I have this kit as well, had it for over a year. Koolaid, I'm not sure why your pump is that loud, but mine isn't nearly that loud. I can hear it when I'm starting the car (it's hooked up to the same lead as the fuel pump), but past that I don't even notice it. As Bob is doing this buid up, I am in the middle of a 370 iron block, that will hopefully see 15-18 psi from a GT70. The car should be a beast. :firedevil
That is good news. It would be normal to be audible on startup, as the pump starts at high speed (it has 2) but then shifts down to the lower speed as the engine warms up. I will be investigating this winter to see what is going on. Mine also starts even louder, then shifts down to a muted roar as it warms up.
I have the GT67, and I am pleased at the power at 8 p.s.i. non-intercooled.
A 370 with 15 psi would be quite interesting.

[NYSS Guy]

You're running 8 psi with no FMIC? Are you running meth? I just found out that I need to go with the GT76 instead of the GT70. I'm a little concerned with the lag on such a big turbo, but maybe that'll help with traction??

[koolaid_kid]

You're running 8 psi with no FMIC? Are you running meth? I just found out that I need to go with the GT76 instead of the GT70. I'm a little concerned with the lag on such a big turbo, but maybe that'll help with traction??
No, I went with larger injectors and a custom (not mail-order) tune. Also remember, there is a (slight) intercooling effect from the long intake tube. It runs very well, no knock, and exhaust temps are right in line. When I was doing all the work, this was the recommendation from STS, either meth or larger injectors.
Not sure what effect the larger turbo will have on lag. I went with the 67 because they said the stock was not really good enough for 8+ psi. Perhaps that is why they told you to go larger, because of the boost you want to run?
Not sure about your traction issues. Mine is the 1-2 shift. At that point, the turbo is spooled and I'm on the pipe. So, lag would not be in play at this point, since the turbo is already spooled.

[jdearles]

very interesting. Maybe I could put one on my truck...


Friend of mine sells the STS kit, put 1 on his truck and gets full boost by 3000RPM.

[jdearles]

']WOW, i mean wow... that's an awesome job you guys have done and I love how you document it so well. Can yo upossibly get a sound clip on the site of that ls1? I really want to know what that beast sounds like with a turbo as a muffler!

I know a guy that has the STS on his Escalade EXT and he thought the exhaust was too loud so he had an exhaust shop put a Borla muffler on it. It sounds sweet. Don't know how much power it made though because of the all wheel drive and the non-availability of a 4 wheel dyno.

[Exotic Performance Plus]

We will be getting a video of this car. Thanks! Bob

[GatorSS]

Is there a kit for the new H3 Hummer?

[02IKND]

I put a STS kit on my stock 02 WS6. I've been very happy with it. Just because the turbo is in the back does NOT mean there is turbo lag. I just recently had her dynoed. Here's my dyno sheet on, remember this, a completely stock LS1 with only a STS turbo for my mods. The first two runs were at 4 psi and the last run was at 7 psi. 467 hp with 508 torque. My air/fuel is totally of whack so next is getting it tuned...again. I'm working on an intercooler, bolt ons, and headers. Maybe even methenol injection.
performin.homeip.net/images/vixen/JYdyno1.jpg

Since it won't let me post the pic you'll have to cut and paste. If it doesn't work, let me know.

[Aaron's00TA]

Wow, this kit has been out for over a year and some of have never heard of it? :think:


Bob, what FMIC is on the front of that car? I'm looking to get one for my STS.

[camaro02DK]

Well 02IKND

I am impressed with those numbers.

I have a 02 ls1 and allready bought Head, cams and headders for my car, but not put them on yet. Your setup would be something I will look more into.

A ? for ya, did you do the install yourself and how many hours did you spend.

BR

Soren

[Aaron's00TA]

Bob, what FMIC is on the front of that car? I'm looking to get one for my STS.


N/M just read that it came from TRT. TRT's FMIC looks pretty good.

[02IKND]

Well 02IKND

I am impressed with those numbers.

I have a 02 ls1 and allready bought Head, cams and headders for my car, but not put them on yet. Your setup would be something I will look more into.

A ? for ya, did you do the install yourself and how many hours did you spend.

BR

Soren

Thanks! My car is completely stock except for the suspension and the stuff I did with the turbo. Yes we put it on ourselves. A friend and I put it on. We did the turbo, fuel injectors, fuel pump, and computer. It took us a day and a half but with a few less beers and less goofing off, it would have taken less than a day. We just had too much fun playing around.

[Exotic Performance Plus]

Wow, this kit has been out for over a year and some of have never heard of it? :think:


Bob, what FMIC is on the front of that car? I'm looking to get one for my STS.

The intercooler kit is from Texas Rear Turbos. You might check into the one made by Synergy, as it looks to fit better. Bob

[Exotic Performance Plus]

We're taking this car to Norwalk this Saturday the 22nd. Hope to see you there. Bob

[Exotic Performance Plus]

Norwalk looked like it was going to get rained out, so we went to US 131.

http://www.exoticperformanceplus.com//images/projectCarImages/Scotts%20Camaro%20SS%20with%20STS%209.jpg

This car is one really impresses us! We took Scotts SS to US 131 in Michigan. With the boost on the low 6lb to 7lb setting, and 14 psi of tire pressure in the M/T Drag Radials, this car was severely traction plagued!
This car would of been in the 10's with a couple more passes.
We were going to run more runs and up the boost, but they kicked us off the track for not having a cage! Bob

[jmangler]

Nice to see that after everyone doubting the STS proof is on the slip that these kits do pritty well! Let us know how you make out on your next trip!

[Exotic Performance Plus]

Will do indeed. Thanks! Bob

[denn454]

i have a few questions no one has brought up yet about this. how well is the turbo going to handle the water if its driven on a rainy day? i'm sure its going to run cooler than a traditional trubo (up to 1600*F) but it still has to run pretty darn hot, if it gets hit with some cold water isnt' there some concern with warping? i'm sure if it was a gradual rain that slowly picked up the water would not be much of an issue but what about running though a puddle and splashing it? it seems to me like that would be the biggest problem with it.

also those pics can be a little decieving, exactly how low in relation to the rear end does the turbo sit? looks to me like a speed bump might cause some pretty serious problems.

also exactly how does the oil system work? does it tap into the oil pan or use its own self contained oil system with a cooler and filter and all the other good stuff?(that sounds a lot more reliable and less likely to have any contaminates that can and do kill turbos to me)

[BrandonDrecksage]

i have a few questions no one has brought up yet about this. how well is the turbo going to handle the water if its driven on a rainy day? i'm sure its going to run cooler than a traditional trubo (up to 1600*F) but it still has to run pretty darn hot, if it gets hit with some cold water isnt' there some concern with warping? i'm sure if it was a gradual rain that slowly picked up the water would not be much of an issue but what about running though a puddle and splashing it? it seems to me like that would be the biggest problem with it.

also those pics can be a little decieving, exactly how low in relation to the rear end does the turbo sit? looks to me like a speed bump might cause some pretty serious problems.

also exactly how does the oil system work? does it tap into the oil pan or use its own self contained oil system with a cooler and filter and all the other good stuff?(that sounds a lot more reliable and less likely to have any contaminates that can and do kill turbos to me)

seperate oiling system...about as high as the stock muffler...and the turbo is probably only runnign 600-700 degrees...so water isn't gonna hurt it...not to mention...you'd have to drive through a very big puddle to get it up as high as the turbo.

[Exotic Performance Plus]

seperate oiling system...about as high as the stock muffler...and the turbo is probably only runnign 600-700 degrees...so water isn't gonna hurt it...not to mention...you'd have to drive through a very big puddle to get it up as high as the turbo.

Very true. Bob

[koolaid_kid]

Bob, do you think that you could fit a muffler on an F-body? I would really like mine to be quieter; I am not a fan of loud cars.
I can make the trip to Fort Wayne with no problem; although the Formula is now sleeping the winter sleep.

[Exotic Performance Plus]

I would think a bullet type of muffler could be installed. Bob

[Blackbird]

you can easily put 2 bullet mufflers on there and quiet things down considerably.

also consider plumbing the wastegate into the exhaust to get rid of that horrible shhhhhhhhhhhhhhhhh sound it makes.

this is what I have done and now you just hear whistle and exhaust. The car is no louder now than it was with my catback.

These things with no muffler are wayyyyyyyy to loud.

[koolaid_kid]

Blackbird, which mufflers did you use? I have seen several that look like they may work, but I would like to know what worked for you.
Would you have any pictures of the mufflers installed?
Thanks.

[Blackbird]

I used the dynomax bullets.

No pics yet. I want to redo some of what I did to pretty it up more before showing the public.

[Exotic Performance Plus]

I used the dynomax bullets.

No pics yet. I want to redo some of what I did to pretty it up more before showing the public.

It sounds like you're going to have a nice set-up. Bob

[turbobird98]

i have a 98 transam i just bought a rear mount turbo. the 60 mm one. i have not put it on yet, but if you go to ststurbo.com you will find on a stock ls1 camaro or transam at 5psi it has 414 rwhp and at 8psi it has 508 rwhp i have talked sts on the phone the set up was designed on a stock set up and is suposed to have no lag at 3000 rpm the advantaged to this you don't have to run and intercooler if not going over 6psi and just being in the back of the car away from the motor will keep cooler, so it will hopefully last longer not being under extreme heat all the time. also the turbo lag is at a minimum and instead of adding weight to the front of the car where it is unwanted, it is right over the wheels to help hooking up!!! i am also going to keep my air box on the their for the stock look and run a rubber tubbing around the return pipe to the throttle body for the stock look. So when a fellow racer is scared about raceing me a quick pop of the the hood say its stock off we go to the race and hopefully take a win!!!!!!!!!

[GatorSS]

Sounds like a nice plan. Post some pics when you get done.

[turbojoe]

Pics look fantastic but...I'm a bit confused about the mounting
of the turbocharger in the rear of the car. With that much plumbing
it could take a while to get on boost. I'm sure it works but I would
prefer to have the turbo mounted closer to the cylinder heads/exhaust
manifolds.

Regards,

Joe Copson AKA TURBOJOE

[koolaid_kid]

Pics look fantastic but...I'm a bit confused about the mounting
of the turbocharger in the rear of the car. With that much plumbing
it could take a while to get on boost. I'm sure it works but I would
prefer to have the turbo mounted closer to the cylinder heads/exhaust
manifolds.

Regards,

Joe Copson AKA TURBOJOE

I have been running one for almost a year and do not feel any lag. The biggest drawback is that you cannot use subframe connectors because of all the plumbing.

[clemsondave]

The biggest drawback is that you cannot use subframe connectors because of all the plumbing.

Not according to tbyrne. Supposedly there is an alternate plumbing method to keep your SFCs. At least I am counting on that. I have KBDDs and am getting and STS shortly.

[Exotic Performance Plus]

Not according to tbyrne. Supposedly there is an alternate plumbing method to keep your SFCs. At least I am counting on that. I have KBDDs and am getting and STS shortly.

I'd be real interested in how they keep the SFC on the driver side! Bob

[clemsondave]

I have sent him an email for specifics. I did a search on ls1tech for STS and subframe. There is a post around Jan 05 in the Forced Induction section. I would post a link, but I have not visited ls1 much since it was re-done and I don't have the required 10 posts to post a link. :wall:

Bob, I will be contacting you about my soon to be purchase.

[koolaid_kid]

Not according to tbyrne. Supposedly there is an alternate plumbing method to keep your SFCs. At least I am counting on that. I have KBDDs and am getting and STS shortly.

I would also be very interested. Please let us know, as they would be my next purchase.
I found this one, in which tbyrne seems to retract their statement.
bradyb works for STS, and seems to agree.
http://www.ls1tech.com/forums/showthread.php?t=262972&highlight=STS+subframe

[Exotic Performance Plus]

Boy, if you look at the pic's from under the Camaro SS that we built, I just don't see how you could retain the driver side subframe connector. Bob

[GatorSS]

I don't like that either. I just wish there were more clearance under the F-bodies. It would be great for a truck/SUV. I've test driven too many trucks/SUVs that were way too wimpy in performance. I need a new truck/SUV and I think I'll add the STS to it after I buy it. My wife wants an H3, so that's probably what I'll get. But that 3.5 liter 5-cylinder engine sure needs some help. Is there a kit for the H3 yet?

[Exotic Performance Plus]

']WOW, i mean wow... that's an awesome job you guys have done and I love how you document it so well. Can yo upossibly get a sound clip on the site of that ls1? I really want to know what that beast sounds like with a turbo as a muffler!

Thanks! Sound clips are now in place. Bob

[Contra[SS]]

Thanks! Sound clips are now in place. Bob

:notworthy: OMG! :love: I think I just creamed in my pants . . that ls1 is one kick ass ride!!! The sound was deeper and better than I thought it would be! And just the sight of the rear end lifting with the reving was just unbelievable! Wow, just wow . . I want one now! lol

Now if only I had some more money . . :D

Thanks Bob for those clips! definately saving up for one of those now.

[transam346]

I had a little problem with my stock cats on the STS kit. I sucked out the insides in to the turbo. Now I am attempting to get ahold of the company to let them know to warn others. But other than that the kit is super fast. I ran 150 shot wet kit of NO2 before and this kit blows it away.

[koolaid_kid]

Dang. That sucks (double entendre' intended).
Keep us posted, we run the system also.
How many miles did your cats have on them?
I agree about the power, it is quite nice for a bolt-on that is always there (unlike nitrous).

[transam346]

the car has 84k on it. But it did destroy the internals of the turbo now its gonna cost me between 350-500 to fix it. But on a positive note I raced a guy with a vortech supercharger (5psi) with an intercooler and an aftercooler and destroyed him I was only on 5 psi. I have the spec 3+ clutch and I would recomend it to anybody grabs hard but hold good.

[D!ck]

Thanks! Sound clips are now in place. Bob
where? looked on build page.


thanx i bet it sounds like a bad mamajama

[Contra[SS]]

the car has 84k on it. But it did destroy the internals of the turbo now its gonna cost me between 350-500 to fix it. But on a positive note I raced a guy with a vortech supercharger (5psi) with an intercooler and an aftercooler and destroyed him I was only on 5 psi. I have the spec 3+ clutch and I would recomend it to anybody grabs hard but hold good.

What does spec 3+ clutch mean? What's the diff between that and the stock one?

Sorry kinda new to cars . . I just knew that ls1's were badass so I got one :yup:

[NYSS Guy]

the car has 84k on it. But it did destroy the internals of the turbo now its gonna cost me between 350-500 to fix it. But on a positive note I raced a guy with a vortech supercharger (5psi) with an intercooler and an aftercooler and destroyed him I was only on 5 psi. I have the spec 3+ clutch and I would recomend it to anybody grabs hard but hold good.

Any idea on what your afr was when the cats came apart? Usually the cats coming apart is more due to the tune than anything else. What sucks is that if your tune is off, and the cats come apart, there's only one direction for that crap to go!!

[Exotic Performance Plus]

where? looked on build page.


thanx i bet it sounds like a bad mamajama

They are on the project car page, right under the description. This is before you click into the link on the car. Bob

[Exotic Performance Plus]

I had a little problem with my stock cats on the STS kit. I sucked out the insides in to the turbo. Now I am attempting to get ahold of the company to let them know to warn others. But other than that the kit is super fast. I ran 150 shot wet kit of NO2 before and this kit blows it away.

I knew this was going to happen sooner or later. Years ago we got in a Ferrari 308 to work on. It had a turbo mounted behind the exhaust system, someone had made the kit, or someone back then was building them. The catalytic converter had self destructed and ruined the turbo.
When the STS turbo's first came out, I use to warn people that this could happen. I think people got tired of me mentioning it... Bob

[transam346]

I had the nelson tuning upgrade with a moderate tune. But right now I am talking to STS they are working with me on how to get it fixed or upgraded. I will keep everybody posted.

[Kwik_Car]

Hi,

An Excel spreadsheet for calculating turbocharger performance can be found at Lulu dot com, as a download available for the book, "High Performance Fieros." The Excel spreadsheet gives fairly accurate results (horsepower, torque, airflow, and temperature rise) if you set the input parameters (such as VE) correctly. VE is the most difficult one to get right. VE parameters for LS1, LS2, LS6, and LS7 engines are calculated in the book. Also the description of how to use the Excel spreadsheet is in the same book. This spreadsheet was set up while we were turbocharging a 3.4L engine in a Fiero, but it should work with a turbocharged LS1, LS2, LS6, or LS7. If anyone tests this Excel spreadsheet and has any comments, please let me know.

Thanks,

Greg Wagoner