mustang dyno result
Thread Starter
Racer
Joined: Nov 2007
Posts: 497
Likes: 0
From: huntley IL
mustang dyno result
Hi guys, i had my car dyno'd after varaam, LG super pro headers and borla stingers installed last weekend and ended up with 355 rwhp i for got how much torque i picked up. It sounds great, fitment is very good. I was told that i would feel the difference but i cant really tell other than it pulls a little harder now...also i took it for a drive the next day and while driving the "service ABS" and "service traction control" came on so i called the guy and he said it has nothing to do with what he did on the car...when he told me to turn off the engine and start it back up with the e brake off then it went away but those two service lights keep coming on now when i drive the car and im not really happy about...i called him and he told me to stop by and he will look at it.
sorry about the long post guys...what do you think is happening to my car? as far as hp numbers he said Mustang dyno really gives out lower numbers,
talk to me guys,,,i need inputs and new to the vette world since this my first car, my dream car and i wanna have fun with it and not headaches...THANK YOU
sorry about the long post guys...what do you think is happening to my car? as far as hp numbers he said Mustang dyno really gives out lower numbers,
talk to me guys,,,i need inputs and new to the vette world since this my first car, my dream car and i wanna have fun with it and not headaches...THANK YOU
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
I have a mustang dyno in my shop, and with the mods you mentioned on a LS2 on my dyno it would make 370 to 380. As for your ABS/Traction system lights coming on, it could be a ground issue. If he installed the headers on your car he could have removed two grounds on the engine block, one is located right above the oil filter, at that point there is braided ground strap and a black wire out of the main harness, that ground is EXTREMELY important!! The second ground is above the starter, at that point there is a large battery ground cable and a 14ga black ground wire coming out of the main harness. If that one is loose, you would definitely have a starting issue. The first ground I mentioned will cause all sorts of drivability issues and may cause ABS and traction system issues as well. It is a main ground for the PCM and the TAC system.
Thread Starter
Racer
Joined: Nov 2007
Posts: 497
Likes: 0
From: huntley IL
I have a mustang dyno in my shop, and with the mods you mentioned on a LS2 on my dyno it would make 370 to 380. As for your ABS/Traction system lights coming on, it could be a ground issue. If he installed the headers on your car he could have removed two grounds on the engine block, one is located right above the oil filter, at that point there is braided ground strap and a black wire out of the main harness, that ground is EXTREMELY important!! The second ground is above the starter, at that point there is a large battery ground cable and a 14ga black ground wire coming out of the main harness. If that one is loose, you would definitely have a starting issue. The first ground I mentioned will cause all sorts of drivability issues and may cause ABS and traction system issues as well. It is a main ground for the PCM and the TAC system.
i really appreciate the responce, take care
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
The other issue I have found when some shops install such parts is that 1 in 25 installations I have found that someone has inadvertently installed the MAF sensor in backwards. There is a directional arrow indicating the correcting installed direction. Also sometimes installing a CAI such as the Vara ram and headers will often skew the MAF calibration. When you deviate from the original GM designed air way, and couple that with headers that frees up the exhaust flow, these mods will changes the way the MAF reports the air flow to the PCM. In some cases it changes it to a point that drivability is affected, in these cases only a custom tune that can rescale the MAF tables within the PCM calibration will take care of the issues.
Thread Starter
Racer
Joined: Nov 2007
Posts: 497
Likes: 0
From: huntley IL
The other issue I have found when some shops install such parts is that 1 in 25 installations I have found that someone has inadvertently installed the MAF sensor in backwards. There is a directional arrow indicating the correcting installed direction. Also sometimes installing a CAI such as the Vara ram and headers will often skew the MAF calibration. When you deviate from the original GM designed air way, and couple that with headers that frees up the exhaust flow, these mods will changes the way the MAF reports the air flow to the PCM. In some cases it changes it to a point that drivability is affected, in these cases only a custom tune that can rescale the MAF tables within the PCM calibration will take care of the issues.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
numbers are numbers, same mods on my now sold 06' she dynoed at i think 351. don't sweat it, would you feel better if it had same mods & they told you 370?
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
I agree as well, The tuner I use is known to have a low number producing dyno, he says it is because it is setup for 1000rwhp cars he builds?...I didn't care about the numbers, I was more concerned with how it performes along with the driveability.
Let us know if you get the bugs worked out.
Let us know if you get the bugs worked out.
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
Melting Slicks
Joined: Mar 2007
Posts: 2,002
Likes: 2
From: Carlsbad CA
I'm not sure about the ABS light but I'm surprised no one has yet to mention that adding long tubes you are likely getting an O2 sensor light. Adding the long tubes has moved the sensors "further down the line" and it takes them more time for them to reach the appropriate temperature therefore setting off a CEL. The light can be turned off by the programmer.
