Tuned our first LS2
Thread Starter
Instructor
Joined: May 2003
Posts: 108
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From: Chesapeake Va
Tuned our first LS2
We tuned an 05 GTO with a Lingenfelter CAI and no mufflers, before tune car made 381 rwhp and 378 rwtq.
After tuning, 399 rwhp and 397 rwtq with gains across the board.
This car baselined bone stock at 342 rwhp, then went to 381 with the CAI and no mufflers.
Looking forward to tuning a head/cam LS2 car hopefully next week.
Will post results.
Frank and Brent
Dyno Tuned Performance, Inc.
Chesapeake, VA. 23320
After tuning, 399 rwhp and 397 rwtq with gains across the board.
This car baselined bone stock at 342 rwhp, then went to 381 with the CAI and no mufflers.
Looking forward to tuning a head/cam LS2 car hopefully next week.
Will post results.
Frank and Brent
Dyno Tuned Performance, Inc.
Chesapeake, VA. 23320
Former Vendor
Joined: Mar 2003
Posts: 18,666
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From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
Originally Posted by dtpracing
We tuned an 05 GTO with a Lingenfelter CAI and no mufflers, before tune car made 381 rwhp and 378 rwtq.
After tuning, 399 rwhp and 397 rwtq with gains across the board.
This car baselined bone stock at 342 rwhp, then went to 381 with the CAI and no mufflers.
Looking forward to tuning a head/cam LS2 car hopefully next week.
Will post results.
Frank and Brent
Dyno Tuned Performance, Inc.
Chesapeake, VA. 23320
After tuning, 399 rwhp and 397 rwtq with gains across the board.
This car baselined bone stock at 342 rwhp, then went to 381 with the CAI and no mufflers.
Looking forward to tuning a head/cam LS2 car hopefully next week.
Will post results.
Frank and Brent
Dyno Tuned Performance, Inc.
Chesapeake, VA. 23320
Cajun
Pro
Joined: Feb 2004
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From: fort lauderdale fl
40 rwhp from having no mufflers and a cai doesnt seem possible.Is anyone else having trouble believing those gains.The most your going to get from a cold air kit is 10 to 15rwhp so you gained 25 to 30 rwhp from having no mufflers??? Something isnt right. I gained only 10rwhp from cai and bullets and 24rwhp from tuning.The tuning part seems about right but the other is hard to believe.
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Joined: Apr 2005
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Originally Posted by dtpracing
We tuned an 05 GTO with a Lingenfelter CAI and no mufflers, before tune car made 381 rwhp and 378 rwtq.
After tuning, 399 rwhp and 397 rwtq with gains across the board.
This car baselined bone stock at 342 rwhp, then went to 381 with the CAI and no mufflers.
Looking forward to tuning a head/cam LS2 car hopefully next week.
Will post results.
Frank and Brent
Dyno Tuned Performance, Inc.
Chesapeake, VA. 23320
After tuning, 399 rwhp and 397 rwtq with gains across the board.
This car baselined bone stock at 342 rwhp, then went to 381 with the CAI and no mufflers.
Looking forward to tuning a head/cam LS2 car hopefully next week.
Will post results.
Frank and Brent
Dyno Tuned Performance, Inc.
Chesapeake, VA. 23320
These numbers are highly unusual for the mods on the car. ...saw the posts yesterday over at the ls1gto forum. (If this is the same car.)
http://www.ls1gto.com/forums/showthread.php?t=58923
http://www.ls2.com/forums/showthread...hreadid=327388
http://www.ls1gto.com/forums/showthread.php?t=58767
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From: Texas
CI 1-4-5-8-9-10 Vet
St. Jude Donor '03 thru '10, '17
Originally Posted by billywallstreet73
40 rwhp from having no mufflers and a cai doesnt seem possible.Is anyone else having trouble believing those gains.The most your going to get from a cold air kit is 10 to 15rwhp so you gained 25 to 30 rwhp from having no mufflers??? Something isnt right. I gained only 10rwhp from cai and bullets and 24rwhp from tuning.The tuning part seems about right but the other is hard to believe.
39 HP from a CAI and removing the mufflers? 
If that's the truth - then the best mod out there would be the muffler removal.
We could call it the "muff pull mod"
Thread Starter
Instructor
Joined: May 2003
Posts: 108
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From: Chesapeake Va
Hey guys, I know the numbers seem high, but we have dyno'd this car since it was brand new. HP picked up just with break in miles which is very common, we have 5 05 GTO's locally that have been doing pulls with "no mods" as miles are put on the car and they seem to pick anywhere from 8-15 at the wheel.
We have dyno'd a couple of C6's, one that was stock made 352 rwhp and one with a full exhaust (LT's back), with no tune it made 391 rwhp.
Just thought everyone would be interested in the numbers, 20 hp and torque at the wheel just from the tune.
Brent and Frank
Dyno Tuned Performance
We have dyno'd a couple of C6's, one that was stock made 352 rwhp and one with a full exhaust (LT's back), with no tune it made 391 rwhp.
Just thought everyone would be interested in the numbers, 20 hp and torque at the wheel just from the tune.
Brent and Frank
Dyno Tuned Performance
Racer
Joined: Jan 2005
Posts: 328
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From: springtown tx
I know the air intake on the Gto is very restrictive as I saw one dynoed and when they removed the top from the air box it picked up a considerable amount. I don't remember exactly how much but I am thinking 15. It was a 05 with a catback. It slightly bettered my stock C6 once they took the lid off of the base.
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Go big or don't go...
Joined: May 2005
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From: Georgetown TX
Originally Posted by dtpracing
Hey guys, I know the numbers seem high, but we have dyno'd this car since it was brand new. HP picked up just with break in miles which is very common, we have 5 05 GTO's locally that have been doing pulls with "no mods" as miles are put on the car and they seem to pick anywhere from 8-15 at the wheel.
We have dyno'd a couple of C6's, one that was stock made 352 rwhp and one with a full exhaust (LT's back), with no tune it made 391 rwhp.
Just thought everyone would be interested in the numbers, 20 hp and torque at the wheel just from the tune.
Brent and Frank
Dyno Tuned Performance
We have dyno'd a couple of C6's, one that was stock made 352 rwhp and one with a full exhaust (LT's back), with no tune it made 391 rwhp.
Just thought everyone would be interested in the numbers, 20 hp and torque at the wheel just from the tune.
Brent and Frank
Dyno Tuned Performance
Post the dyno sheet with CORRECTED numbers
Also, what's the dynometer you are running? Those numbers seem generally high especially given a standard 15% loss.
JK
Pro
Joined: Feb 2004
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From: fort lauderdale fl
Your dyno is very high if your getting low 350s out of stock ones and 390s with exhaust without a tune.The norm for tune,exhaust and intake is generally in the 370s to low 380s and you got 390s with no tune.I personally dont think its accurate at all.
Thread Starter
Instructor
Joined: May 2003
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From: Chesapeake Va
The dyno is a Dyno Dynamics, most of the GTO's have dyno'd around 340 rwhp stock, which if my math is correct (400 x's 15% drivetrain loss=340 rwhp).
We have only had one completely stock C6, it made 351 rwhp...why is that so unbelievable? Most of the cars we dyno are 03-04 Cobras, we have seen as much as 25 rwhp difference from one stock car to another, I know it's s/c, but I'm just trying to make a point that just because a car is rated at 400 hp doesn't mean that every one will make exactly 400.
Anyway, just posting information...do with it what you will.
We have only had one completely stock C6, it made 351 rwhp...why is that so unbelievable? Most of the cars we dyno are 03-04 Cobras, we have seen as much as 25 rwhp difference from one stock car to another, I know it's s/c, but I'm just trying to make a point that just because a car is rated at 400 hp doesn't mean that every one will make exactly 400.
Anyway, just posting information...do with it what you will.
Team Owner
Joined: Mar 2001
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From: Virginia Beach
CI 3-5-6-7-8 Veteran
I was about to make a thread asking what C6's w/ bolt-ons are dynoing at... I read Nick's post on DragVa and I really think your dyno is optimistic or the correction factors are off.
Or... you over inflated the tires etc.
Or... you over inflated the tires etc.
Thread Starter
Instructor
Joined: May 2003
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From: Chesapeake Va
So, when the car made 341 bone stock, was the dyno wrong then? Nothing has changed on the dyno, this just happens to be one of those cars that responded VERY well to the mods.
The numbers are SAE corrected, on the day he dyno'd the correction was .989.
Sorry if everyone disagrees.
The numbers are SAE corrected, on the day he dyno'd the correction was .989.
Sorry if everyone disagrees.
Go big or don't go...
Joined: May 2005
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From: Georgetown TX
Originally Posted by dtpracing
The dyno is a Dyno Dynamics, most of the GTO's have dyno'd around 340 rwhp stock, which if my math is correct (400 x's 15% drivetrain loss=340 rwhp).
We have only had one completely stock C6, it made 351 rwhp...why is that so unbelievable? Most of the cars we dyno are 03-04 Cobras, we have seen as much as 25 rwhp difference from one stock car to another, I know it's s/c, but I'm just trying to make a point that just because a car is rated at 400 hp doesn't mean that every one will make exactly 400.
Anyway, just posting information...do with it what you will.
We have only had one completely stock C6, it made 351 rwhp...why is that so unbelievable? Most of the cars we dyno are 03-04 Cobras, we have seen as much as 25 rwhp difference from one stock car to another, I know it's s/c, but I'm just trying to make a point that just because a car is rated at 400 hp doesn't mean that every one will make exactly 400.
Anyway, just posting information...do with it what you will.
352-12 = 340
391-12 = 379
Sounds like you are getting good results; hope to see some more and dyno sheets. Also, the "CORRECTED" comment was more of a jokey-joke on my part as we sometimes get into inflated discussions about the numbers!
JK
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From: Williamsburg Virginia
Just figured I'd mention that this is my car that they are talking about. Brent and Frank are awesome and know thier stuff. They just did another guy's 05 GTO M6 with SLP LT's, Corsa catback, LPE CAI, and Hi-flow cats with the custom predator tune made 400/409.
Team Owner
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From: Arizona
Originally Posted by Fat Nick
Just figured I'd mention that this is my car that they are talking about. Brent and Frank are awesome and know thier stuff. They just did another guy's 05 GTO M6 with SLP LT's, Corsa catback, LPE CAI, and Hi-flow cats with the custom predator tune made 400/409.
Navigator
Joined: Jan 2006
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From: Williamsburg Virginia
Both will change your a/f, not to mention a stock LS2 can always use a little tweaking. So I'd say go for it, unless you buying more mods in the soon future, then I'd wait and do it all at one time.