Dyno #s w/ American Racing Headers
Thread Starter
Burning Brakes
Joined: Dec 2004
Posts: 882
Likes: 0
From: St. Augustine Fl
Dyno #s w/ American Racing Headers
Just had the car dynotuned today, mods are Ameaican Racing Headers w/ high flow cats, Corsa Sport, Halltech Intake, also added new plugs and wires before the tune. Had HP Sales in Pompano install the headers and Mike Norris do the tune.
Stock was 329HP / 330 FTLB
Before tune 378.4 HP / 358 FTLB
After tune 397.1 HP / 390 FTLB
I will post dyno sheets as soon as I have access to a scanner. These sound to pretty high to me, however, ill dyno it again in December on the same dyno I ran my stock numbers on and see what that tells me. As of now im extremely happy with this setup and the numbers.
Stock was 329HP / 330 FTLB
Before tune 378.4 HP / 358 FTLB
After tune 397.1 HP / 390 FTLB
I will post dyno sheets as soon as I have access to a scanner. These sound to pretty high to me, however, ill dyno it again in December on the same dyno I ran my stock numbers on and see what that tells me. As of now im extremely happy with this setup and the numbers.
Racer
Joined: Sep 2005
Posts: 390
Likes: 0
WOW...very impressive numbers you put up. From your before dyno results, it seems you have an A6 C6, is that correct? I ask because my stock M6 put up 350/350 and I plan on those same mods, just with Bullets, and don't think those mods will give me an additional 70HP and 60TQ. I figured that i would be around 390/390 afterwards, or I hope anyhow.
Congrats on those numbers again!!
Ah, I see you have an 05, an A4 then I assume??
Congrats on those numbers again!!
Ah, I see you have an 05, an A4 then I assume??
Le Mans Master
Joined: Feb 2006
Posts: 5,762
Likes: 4
From: Chandler Arizona
Great numbers, but I'm betting it's a Manual tranny. If it's an A6, then those numbers are fantastic. If it's a manual, then the car was most likely hot when it was run stock and that's why the numbers are so low. I've never seen headers pick up 49 rwhp before. Also, did you change out to a 160 stat? Also, you picked up 19 hp with a tune? That is the most I've seen so far.
Thanks,
Glenn
Thanks,
Glenn
Safety Car
Joined: Jun 2005
Posts: 4,905
Likes: 569
From: Bucks County PA
He has a manual tranny, I looked it up in his profile and saw a pic in one of his posts.
Sorry for invading your privacy. lol
Are they 1&3/4" or 1&7/8" headers?
Did you go with the 2&1/2" or 3" x-pipe?
Great numbers by the way!!!
I am currently in the market for LT headers and American Racing seems the way to go.
I already have Corsa Sports and am thinking of a Halltech style air intake.
So your choices are very relevant to my decision.
Thanks,
Howard
Sorry for invading your privacy. lol
Are they 1&3/4" or 1&7/8" headers?
Did you go with the 2&1/2" or 3" x-pipe?
Great numbers by the way!!!
I am currently in the market for LT headers and American Racing seems the way to go.
I already have Corsa Sports and am thinking of a Halltech style air intake.
So your choices are very relevant to my decision.
Thanks,
Howard
Last edited by yell03; Aug 26, 2006 at 09:16 AM.
Thread Starter
Burning Brakes
Joined: Dec 2004
Posts: 882
Likes: 0
From: St. Augustine Fl
Ya I have 1&7/8 w/3" X-pipe, M6, no thermostat and the car was cold when I ran the stock dyno... although it was like a million degrees outside that may have something to do with it.
Safety Car
Joined: Jun 2005
Posts: 4,905
Likes: 569
From: Bucks County PA
Extreme heat would kill your #s, the dyno tries to compensate, but your car still can't make the same power in with HOT air.
Good point,
STD #s would be about 7-8rwhp/rwtq high and then the #s would be a little more in line with others.
Even still, they are GREAT #s!
Howard
Good point,
STD #s would be about 7-8rwhp/rwtq high and then the #s would be a little more in line with others.
Even still, they are GREAT #s!
Howard
Le Mans Master
Joined: Oct 2005
Posts: 5,052
Likes: 889
From: Tampa Florida
[QUOTE=yell03]He has a manual tranny, I looked it up in his profile and saw a pic in one of his posts.
Sorry for invading your privacy. lol
Your personal profile is used for creditability also. There's nothing wrong with what you did. There are some that elect to hide their entire identity, which I don't understand. Just a personal opinion.
Sorry for invading your privacy. lol
Your personal profile is used for creditability also. There's nothing wrong with what you did. There are some that elect to hide their entire identity, which I don't understand. Just a personal opinion.
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Pro
Joined: Feb 2004
Posts: 644
Likes: 0
From: fort lauderdale fl
Where did you get the headers from? Those gains seem pretty high.Ive seen alot of guys on this with your mods and a cam who are only 5 to 10 hp more.I only had 333rwhp pretune with my c6,6spd with catback and halltech and then was at 357rwhp with a tune.The tuning is where its at on these cars I think.I might have to get some headers now though.Does the headers sound alot louder compared to stock?My bullets are damn loud already.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Holy Cow!! 
I just got back from dropping my C6 off at Horsepower Sales in Pompano for American Racing Headers, 3:90 gears, hardened shaft and DTE brace. Man those 3" pipes are HUGE. Headers look great too. These are some incredible numbers! I hope I'm close to that. I've got a goal of 400 rwhp and 11.99 without a cam, and you're basically there on the rwhp front!
You should join us at the Corvette Challenge at Moroso on Sept 2 and see what that thing will do. I won't have a tune by then but I should have enough miles on my gears to see what I can do. My best so far is 12.55 @112. Hope to meet you there!
I just got back from dropping my C6 off at Horsepower Sales in Pompano for American Racing Headers, 3:90 gears, hardened shaft and DTE brace. Man those 3" pipes are HUGE. Headers look great too. These are some incredible numbers! I hope I'm close to that. I've got a goal of 400 rwhp and 11.99 without a cam, and you're basically there on the rwhp front! You should join us at the Corvette Challenge at Moroso on Sept 2 and see what that thing will do. I won't have a tune by then but I should have enough miles on my gears to see what I can do. My best so far is 12.55 @112. Hope to meet you there!
Team Owner
Joined: Oct 2001
Posts: 46,765
Likes: 5
From: Boynton Beach Florida
St. Jude Donor '07-'12, '20
Great numbers 
For what it's worth those numbers are corrected, and Mike tunes on the very conservitive side. Hope to see you out there at Moroso with us next Saturday night.
Bob
For what it's worth those numbers are corrected, and Mike tunes on the very conservitive side. Hope to see you out there at Moroso with us next Saturday night. Bob
Intermediate
Joined: Nov 2005
Posts: 42
Likes: 0
From: Ft.Lauderdale Florida
I also got a Dynotune at Horseower sales by Mike Norris,and I wish I hadn't!!! My car Dynoed at 363.2 horse and 357.6 Torque with Kooks L.T.'s hi-flow cats,Halltech SSM,160 thermostat,Calloway Double D exhaust---before the tune,,,then 364.7 horse,and 360.0 Torque with the tune!!! I know the computer resets itself , but only getting 1.5 horse,and 2.4 Torque for the $400.00 it costs for the tune!!,I feel like I wasted the money!!!
Burning Brakes
Joined: Aug 2004
Posts: 804
Likes: 0
From: Miami FL
Originally Posted by silvre c6
I also got a Dynotune at Horseower sales by Mike Norris,and I wish I hadn't!!! My car Dynoed at 363.2 horse and 357.6 Torque with Kooks L.T.'s hi-flow cats,Halltech SSM,160 thermostat,Calloway Double D exhaust---before the tune,,,then 364.7 horse,and 360.0 Torque with the tune!!! I know the computer resets itself , but only getting 1.5 horse,and 2.4 Torque for the $400.00 it costs for the tune!!,I feel like I wasted the money!!!
P.S. Don't get me wrong I will still be going to HPsales for all my installation needs, but I don't know about the tuning.
Team Owner
Joined: Oct 2001
Posts: 46,765
Likes: 5
From: Boynton Beach Florida
St. Jude Donor '07-'12, '20
Originally Posted by STPH8N
Same over here when I went to them for the install and tune of Lg Lt headers and bullets I only got 336rwhp 332tq. When I saw the dyno sheet I was like what the f**k I was expecting 360 to 370 and I was totally disappointed. Jeremy than told me that since my car was an A4 that it was hard to get the most power on the dyno from it. At first I was like how can that be, but than most people would tell me that my 2.73 stock gears were the ones that caused this to happen. Can anybody offer their info to whether this true?
P.S. Don't get me wrong I will still be going to HPsales for all my installation needs, but I don't know about the tuning.
P.S. Don't get me wrong I will still be going to HPsales for all my installation needs, but I don't know about the tuning.
Burning Brakes
Joined: Aug 2004
Posts: 804
Likes: 0
From: Miami FL
Originally Posted by 16Again
A4 will always dyno lower than a 6 speed. If you change gears it will dyno even lower.
Last edited by STPH8N; Aug 26, 2006 at 08:04 PM.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Originally Posted by STPH8N
So that means that if I would have dynoed it before the headers and exhaust it would have been in the 300 to 320 rwhp range? And if it weren't the gears that had part in it than what was the cause for a low dyno with the headers and exhaust?
Also, unfortunately, there is luck of the draw with factory builds too. I've seen C5 Z06's range from 350 to 382 in our Challenge Group, all with headers, intake and Mike Norris tunes. Some cars just respond better for some reason. My C5 was low from the factory - 300 rwhp on an mn6. Cam and heads picked it right up to 404.