I got my Z28 dynoed and tuned...
This is a discussion on I got my Z28 dynoed and tuned... within the Camaro / SS forums, part of the Vehicle Specific category; Well I finally got my car tuned SLP Lid LS6 Intake QTP Long Tube Headers 3" ORY Magnaflow Catback SS3600 ...
10-22-2008, 07:27 PM #1
I got my Z28 dynoed and tuned...
Well I finally got my car tuned
QTP Long Tube Headers
My numbers were 334/340 on a dynojet.
The numbers could be a bit better, but i am not disappointed. This is an automatic, (hence the stall).
It also had 105k on it. The tune turned out very well. I recommend Dan at dynosport in lincoln nebraska for anyone that lives in the area. The car felt way better afterwards....pulls reallly smooth now. Idles like a dream.
My buddy had his hand on the car talking to me through the window and asked if it was running...he couldn't believe the smoothness of the LS1 haha
Jon, if you ever read this i am just givin you crap.
I can post the dynosheet, but it's pretty typical. TQ across the whole thing steady. HP was the steadiest incline i have ever seen. I've posted pics of my car all over the board, but if anyone wants to see some, i got em
10-23-2008, 01:17 AM #2
Dont be disappointed, everyone started somewhere, Those numbers arent too bad for the work you have done.. Now its time to start modding even more.
J2001 SS, Its not the car its the Driver that matters....
10-23-2008, 03:41 AM #3
10-23-2008, 03:44 AM #4
My next mods might be minimal. The car isn't perfect so idk how far I really want to go. I'll probably stick a cutout on.
Don't know if i'll go behind the headers or near the catback. I was thinking of doing a custom grind cam, but unsure now. That'll be about 1500 with supporting mods and a tune.
10-23-2008, 05:46 AM #5
- Join Date
- Aug 2005
- Pittsburgh, PA
My life is a
- Ben Stiller movie.
I have an m6 and damn near identical mods to mine. Guess what? our numbers are basically the same.
10-23-2008, 06:03 AM #6
- Join Date
- Dec 2005
- Cedar Rpaids,IA
- 1998 Camaro SS
When I had the same mods on my SS A4 and they dyno tuned it I got just a little less power then you.1998 Camaro SS Hard Coupe Bright Red #1593
Mods: Lots!!, still my daily driver except for winter
Mods Lots!!, weekend cruiser
325rwhp and 320rwft/lbs
2007 Dodge Ram 1500 4x4 (Yes its got a HEMI)
Mods: Catback, BFI CAI, Winter daily driver
10-23-2008, 09:00 AM #7
10-23-2008, 02:55 PM #8
Put the cutout in the I pipe right befor it goes over the axle, fits perfect..
10-23-2008, 04:32 PM #9
I have same mods plus a Futural Motorsports cam that I am very happy with [FMS Custom Grind Camshaft FM1-F13-112 [+4] - 230"/232" .595"/.585" 112LSA]. A tune improved driveability by reducing hot-start surging and the chuggling you can get with a cam mod, but barely improved peak HP & Tq. Operator set vehicle weight at 3850. This was on a Mustang Dyno which is a brake dynamometer, as opposed to the Dynojet which is an inertial dyno. I am told the brake dynos produce lower numbers than inertial dynos.
What did you weight the car at?
What were your base numbers before the tune?
10-23-2008, 05:42 PM #10
I am not sure what it weighs. Don't z28s typically weigh 3500. I removed the spare, so thats like 40lbs. I am supposed to race someone this weekend...maybe i should take out the seats haha.
I didn't gain much, but he called it a safe tune. before the tune i had about 14.8-15.2 AFR. Now it's a solid 13 AFR.
I was thinking hard about the cutout. Not sure if i should go with dual electrics behind the headers. Or maybe put a muffler just before the cutout in the I pipe. I know the dual electrics would be loud, but wouldn't i gain hp and sound good with the muffler in the I pipe before the cutout. Not sure which muffler would sound the best.
10-23-2008, 11:54 PM #11
If you get a cutout i wouldn't put a muffler before it... it kinda defeats the purpose. I've got similar mods to yours with a cam and a cutout and it's loud but not out of control with it closed (like your's prolly is) and it's rediculous with it open.
My buddy with my same mods put two behind the headers instead of one on the ipipe like me, and when it comes to sounds we are the same in terms of volume and quality.... and it sounds good....
i'd get one cutout and no muffler.
10-24-2008, 05:31 AM #12
Yeah it's loud, but to put it in perspective; a cop said "that thing sounds awesome" while writing me a speeding ticket. Apparently he was not clued about cutouts, even though you can easily see it from behind the car.
Opening the cutout showed +20HP on the dyno [stock muffler]. I know y'all call BS to this and I wouldn't have believed it if I hadn't seen it myself.
10-24-2008, 09:07 AM #13
10-24-2008, 09:54 AM #14
[TURN OFF: speed limiter, 2ndary cats, EGR circuit, CAGS/Skip Shift, VATS]
[CHANGE: redline, auto-trans shift points, idle speed, speedometer]
I would suggest that the above should be inexpensive, if it's not -go elsewhere.
Without significant mods [cam, NO2, blower, etc.] tuning will not result in power gain [ie., waste of money].
Tuning for power & driveability: I hear $300 -$500 [mine was free, son works there]. Forget buying someones reprogrammer or software. Reprogrammers don't do anything significant [change Idle & reset codes] and are a waste of time. Software? You won't know what you are doing -an experienced tuner will solve issues and prevent problems you never dreamed to ask about. And without live feedback of the PCM while the car is on a dyno, you really are risking engine damage.
If you just want to see what the car does, watch the local shops for "dyno days" where you can show up, usually with a local club, and pay $25 for 2 pulls and a print out.
See these guys if you are in central Texas, or use mail-order. They know what they are doing. http://www.fuelinjection.com/
I don't sell this stuff or work for these guys, this is just what I have learned.
Last edited by Vexzer; 10-24-2008 at 02:02 PM.
10-24-2008, 12:13 PM #15
150, but it was a special price since he was doing a dyno day
Last edited by allbaugh_04; 10-24-2008 at 12:16 PM.
10-24-2008, 05:15 PM #16
10-24-2008, 05:31 PM #17
it's worth it for the price. if you call the guy he'll quote you more so don't bother (3-400). if it's a special day and you are nice, i am sure he'll cut you a break. i noticed you were in the area and c&s does it, but they cost an arm and a leg. someone i know said he might try and set something up with them though. i'll try and let you know if he does.
what do you have done that warrants a tune?
10-24-2008, 05:32 PM #18
i heard madz28 i think his name was...on ls1tech
anyways, i hear he does a mail order tune and it's usually spot on. pull your pcm and send it to him. that's always an option.
10-24-2008, 05:45 PM #19
my 98 dynoed 350 351 with lt, ory, lid and ls6 intake. Your numbers could definetaly be higher.
I didnt have a tune either BTW
10-24-2008, 05:51 PM #20
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