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View Full Version : 2005 GTO Dynoed.

Robw_29
08-04-2005, 06:59 PM
Just installed LPE CAI so I dynoed my car just to see what it would do. I have a 6spd and only 765 miles on the clock.

Got 349.7 HP and 346.7 TQ.

I would post the graph but the file limit here is way to small. pics are uploaded here.

http://www.ls2gto.com/forums/showthread.php?t=35460
Hurley711
08-04-2005, 07:09 PM
Nice numbers, anymore mods planned? And I agree the file posting limit is retarded
Robw_29
08-05-2005, 04:01 AM
Yeah more mods are coming. I have Stainless Works long tube headers coming. I am shopping for a cam but not sure if I want to do that just yet. So in about 2 - 3 weeks I will have LT headers with random technology cats and dyno tune. Looking for 380 rwph. I think those 2 mods should get me there these LS2's run pig rich from the factory so tuning has been showing good gains.
Sarge
08-05-2005, 06:43 AM
I have the SW LT Headers/R/T Cats and Borla exhaust on my 04 Goat....you will love the growl and the new found RWHP. First thing I noticed was the RPM's spooled quicker......good choice man. Of course the Patriot heads/Comp Cam/LSX intake didnt hurt anything either:)
Rob
08-05-2005, 07:01 AM
Nice. Now start modding that thing :) Taken it to the track yet?
'99 SLP#24
08-05-2005, 07:20 AM
Very nice cars both of you, maybe if I show this to my dad he'll start modding his 04 GTO!!!!
Sarge
08-05-2005, 01:15 PM
Be careful of that modding bug....once you start you can never stop:)
http://img.photobucket.com/albums/v647/sgtgeek/HeatJobSmall.jpg
third_shift|studios
08-08-2005, 07:25 AM
i htought the O5's came with Ls2's rated for 400hp???
pecha
08-08-2005, 10:01 AM
i htought the O5's came with Ls2's rated for 400hp???
400hp on the flywheel, when you dyno you measure it at the wheels after a drivetrain loss
Sarge
08-08-2005, 12:05 PM
^^^Correct^^^^
Also you will get different reading from a DynoJet Dyno than you will a Mustang Dyno....as the Mustang Dyno will provide resistance and the DynoJet just spins freely.....
ULTIMATEORANGESS
08-08-2005, 02:51 PM
I just ordered a magnaflow for my 05.looking forward to getting it installed. :usa:
Robw_29
09-02-2005, 07:40 AM
Okay I have my SW LT headers and random tech cats installed as well as a custom x-pipe and catback using 14211 Magnaflow mufflers. I wasn't able to get the car dyno tuned this week I am hoping to get this done early next week.

So with just LPE CAI and 765 miles on the clock I was at 349.7 RWHP what do you all think I will get with the new mods and tune? I think I will dip into the 390 + RWHP range. My car should have about 2200 miles on it at tune time.
BIG D's SS
09-02-2005, 07:43 AM
So which machine is better to have dynoed on?
Robw_29
09-02-2005, 07:49 AM
I have only used dynojets. I don't think one is better then the other but I would stick with one type that way you have a good test on how well your car improved.
Rob
09-02-2005, 05:09 PM
I think you might be close but I think it'll be in the 380+ range.
Robw_29
09-03-2005, 04:16 AM
I think you might be close but I think it'll be in the 380+ range.


Cool. I guess we will find out soon. I know one person is at 397 rwhp with similar mods but every car is different.

I think I would be a bit disappointed with under 40 rwhp gain from my mods including the tune.
Rob
09-03-2005, 10:45 AM
Curious either way what you get. I just installed SW headers on my Dad's '05 and the car really woke up. Throttle response is so much better and the car runs a lot "crisper" now.

He has the SAP on his so he's running Magnaflow mufflers. Not a whole catback but I'm sure better than the stock mufflers. He's getting a tune later this month. I'm sure he'll be making more than my car after that...