stock LS1 rwhp
Instructor
Joined: Sep 2009
Posts: 196
Likes: 3
Yes I agree (enlighting) in aleast one respect imo, I have read guys say a number of times no rwhp gain with a catback system on a C5. But if you read the link I posted with dyno chart numbers with the Magnaflows before & after and look at PeterPans numbers w/catback only they point to a possible 8-12 rwhp gain with a catback system imo. Also from my previous research Devilman02 from this forum with a manual 2002 C5 made 310rwhp/315rwtq sae corrected with a catback & X only on a MUSTANG dyno. Would be interesting to see what he would of made on a dynojet dyno.
Last edited by TR97C5; Feb 14, 2010 at 11:06 PM.
Burning Brakes
Joined: Apr 2008
Posts: 877
Likes: 4
From: Nouvelle Ecosse
Yes I agree (enlighting) in aleast one respect imo, I have read guys say a number of times no rwhp gain with a catback system on a C5. But if you read the link I posted with dyno chart numbers with the Magnaflows before & after and look at PeterPans numbers w/catback only they point to a possible 10-12 rwhp gain with a catback system imo. Also from my previous research Devilman02 from this forum with a manual 2002 C5 made 310rwhp/315rwtq sae corrected with a catback & X only on a MUSTANG dyno. Would be interesting to see what he would of made on a dynojet dyno.
Some people get defensive when they spend $$$ on upgrades and don't get much more results than what a simple catback and x would give them. They denounce it and say that the gain is nothing....or that it's a "happy" dyno.
People also need to realize that these are mass produced engines and there will be a certain amount of inherent variation in results. + or - 5% wouldn't be unheard of would it?
Banned Scam/Spammer
Joined: May 2007
Posts: 15,685
Likes: 1,330
From: Machineguns, because I don’t compromise
Correct. Also...
'01 Zo6s average 335 rwhp
'02+ Zo6s average 350-360 rwhp.
p.s. I've spent years on ls1tech which is geared mainly towards f-bodies with ls1 engines and it's common for the 98-00 Camaro/Trans Am to dyno 285-305 rwhp & '01-'02 to dyno 300-315 due to the live rear axle absorbing less hp compared to the Corvette's IRS set-up. The f-bodies had lower crank hp ratings from the factory... but everyone knew they were the identical engine (and I mean EXACT) that the Corvette had.... --The f-body had lower factory ratings yet they dyno'd higher!
The Corvette was still a little quicker (even with less rwhp) due to lighter weight and better aerodynamics especially in the xxx speeds. It was
always a "thing" in the early days to modify an f-body on a budget and hand a Corvette (or mustang) his azz... with Grey Poupon.
Team Owner
Joined: May 2001
Posts: 36,836
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
209Time below are notes from my research on rwhp of C5's LS1's
Stock auto 278rwhp stock before Mangnaflow mufflers. 290 rwhp with Magnaflow mufflers & 293rwhp with X pipe & Magnaflow mufflers
http://www.exoticperformanceplus.com....html?item=461
2001 auto 287 rwhp
http://www.digitalcorvettes.com/foru...t=94479&page=2
Member Clif 1999 auto from this forum made 275rwhp
Member Jaygood auto from this forum 1999 made 289rwhp
2000 C5 Manual 309rwhp he cut a hole in the stock airbox to let a little more air in.
http://forums.corvetteforum.com/c5-t...ppy-owner.html
Member DevilDogII manual from this forum stock 1998 made 310rwhp
Member blaulula 99 manual from this forum bone stock 296rwhp.
Member PeterPan manual from this forum 1999 stock with Corsa mufflers only made 317rwhp.
Member LoneStarFRC '99 FRC from this forum bone stock 309.5
Stock auto 278rwhp stock before Mangnaflow mufflers. 290 rwhp with Magnaflow mufflers & 293rwhp with X pipe & Magnaflow mufflers
http://www.exoticperformanceplus.com....html?item=461
2001 auto 287 rwhp
http://www.digitalcorvettes.com/foru...t=94479&page=2
Member Clif 1999 auto from this forum made 275rwhp
Member Jaygood auto from this forum 1999 made 289rwhp
2000 C5 Manual 309rwhp he cut a hole in the stock airbox to let a little more air in.
http://forums.corvetteforum.com/c5-t...ppy-owner.html
Member DevilDogII manual from this forum stock 1998 made 310rwhp
Member blaulula 99 manual from this forum bone stock 296rwhp.
Member PeterPan manual from this forum 1999 stock with Corsa mufflers only made 317rwhp.
Member LoneStarFRC '99 FRC from this forum bone stock 309.5
Thread Starter
Melting Slicks
Joined: Jul 2008
Posts: 2,889
Likes: 25
From: CALIFORNIA
i started this thread because the guys at Borla didnt give me a stock baseline to compare with.
my car is a 2000 a4 bone stock,they built a custom set of LT headers X-pipe and a cat-back, and my car put out 333 rwhp on the dyno.....thats what the graph says.
so what do you guys think....i will post pic's later.......please dont shoot the messenger if you dont agree with any of the info that was posted.
my car is a 2000 a4 bone stock,they built a custom set of LT headers X-pipe and a cat-back, and my car put out 333 rwhp on the dyno.....thats what the graph says.
so what do you guys think....i will post pic's later.......please dont shoot the messenger if you dont agree with any of the info that was posted.
Instructor
Joined: Sep 2009
Posts: 196
Likes: 3
i started this thread because the guys at Borla didnt give me a stock baseline to compare with.
my car is a 2000 a4 bone stock,they built a custom set of LT headers X-pipe and a cat-back, and my car put out 333 rwhp on the dyno.....thats what the graph says.
so what do you guys think....i will post pic's later.......please dont shoot the messenger if you dont agree with any of the info that was posted.
my car is a 2000 a4 bone stock,they built a custom set of LT headers X-pipe and a cat-back, and my car put out 333 rwhp on the dyno.....thats what the graph says.
so what do you guys think....i will post pic's later.......please dont shoot the messenger if you dont agree with any of the info that was posted.
http://lgmotorsports.com/gallery/dis...lbum=3&pos=102
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Thread Starter
Melting Slicks
Joined: Jul 2008
Posts: 2,889
Likes: 25
From: CALIFORNIA
Congrats nice pick up in rwhp imo and sounds believable to me with an auto running a catback, X pipe and LT's. For comparison from my previous research here is a dyno of 1999 C5 with just LG steet headers putting down 335rwhp/ 351rwtq so yours looks good. The only thing it doesn't say if it this is an auto or manual but I am thinking it is a manual but not 100% sure.
http://lgmotorsports.com/gallery/dis...lbum=3&pos=102
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http://lgmotorsports.com/gallery/dis...lbum=3&pos=102
*
Instructor
Joined: Sep 2009
Posts: 196
Likes: 3
Correct. Also...
'01 Zo6s average 335 rwhp
'02+ Zo6s average 350-360 rwhp.
p.s. I've spent years on ls1tech which is geared mainly towards f-bodies with ls1 engines and it's common for the 98-00 Camaro/Trans Am to dyno 285-305 rwhp & '01-'02 to dyno 300-315 due to the live rear axle absorbing less hp compared to the Corvette's IRS set-up. The f-bodies had lower crank hp ratings from the factory... but everyone knew they were the identical engine (and I mean EXACT) that the Corvette had.... --The f-body had lower factory ratings yet they dyno'd higher!
The Corvette was still a little quicker (even with less rwhp) due to lighter weight and better aerodynamics especially in the xxx speeds. It was
always a "thing" in the early days to modify an f-body on a budget and hand a Corvette (or mustang) his azz... with Grey Poupon.
Last edited by TR97C5; Feb 15, 2010 at 01:11 AM.
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Drifting
Joined: Aug 2009
Posts: 1,288
Likes: 2
From: Richmond Virginia
Correct. Also...
'01 Zo6s average 335 rwhp
'02+ Zo6s average 350-360 rwhp.
p.s. I've spent years on ls1tech which is geared mainly towards f-bodies with ls1 engines and it's common for the 98-00 Camaro/Trans Am to dyno 285-305 rwhp & '01-'02 to dyno 300-315 due to the live rear axle absorbing less hp compared to the Corvette's IRS set-up. The f-bodies had lower crank hp ratings from the factory... but everyone knew they were the identical engine (and I mean EXACT) that the Corvette had.... --The f-body had lower factory ratings yet they dyno'd higher!
The Corvette was still a little quicker (even with less rwhp) due to lighter weight and better aerodynamics especially in the xxx speeds. It was
always a "thing" in the early days to modify an f-body on a budget and hand a Corvette (or mustang) his azz... with Grey Poupon.
I had an '02 WS6 T/A that I slapped a lid and ran a no muffler cat-back and it ran the same time's as my vette does stock. 13.0's
Race Director
Joined: Mar 2004
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From: Fort Wayne IN
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1999 M6, only mod that could affect RWHP at the time was the repro 18x10.5 Zo6 wheels in the back, so if anything, numbers could have been higher. This was with 58K on the clock and what I presumed to be the original plugs and air filter on the car when I took them off a couple weeks later.
Le Mans Master
Joined: Aug 2006
Posts: 9,987
Likes: 25
From: If opportunity doesn't knock, build a door. South West Florida / Livin' The Dream
St. Jude Donor '12
My almost stock 02 put down 329 RWHP and 343 RWTQ
At the time A4 with 2:73 gears, Blackwing and Corsa Pace Car Cat Back. This was after my tune. Baseline was 319 RWHP and 333 RWTQ
At the time A4 with 2:73 gears, Blackwing and Corsa Pace Car Cat Back. This was after my tune. Baseline was 319 RWHP and 333 RWTQ
