Kooks headers dyno results
Drifting
Joined: Jul 2000
Posts: 1,912
Likes: 0
From: South Florida
Originally Posted by Dave_Busch
Yes there is more power to be had. The air fuel ratio is rich from the factory.
I made a similar suggestion in another thread but in your case... i'd like to see what the car would do with the header and mild head porting (to just match the new bore size) to see what the combination will do and to see how much hp is left on the table by GM.
Team Owner
Joined: Jun 2001
Posts: 26,714
Likes: 344
From: Houston, TX
Originally Posted by Dave_Busch
After a lot of testing we picked up 22HP and 22TQ. We used the 1 3/4" headers and high flow cats. Every thing else is stock. On the track we picked up 4 tenths and 6 MPH. They make more power rite off idle and all the way to the rev limiter. This is power you can really feel. The dyno graph will be posted tomorrow.
I hate to be so blunt, but there are some pretty wild claims going around about the mods on C6's. The before and after's just don't add up.
Please give us your thoughts on why it would pick up 6mph with just 22 hp.
Advanced
Joined: Aug 2003
Posts: 79
Likes: 0
From: Bay Shore ny
J, Not to speak for Cartek and their well known ability to make C5's and C6's fly but I think I can help answer the question. The power and torque gained from the Kook's headers were throughout the rpm range and not just at peak. Another major factor is that the driveline in these cars are so efficient that even minor power and torque increases translates to significant performance gains. If there was a Turbo 400 trans and a Dana 60 rear in that C6 the mph gains wouldn't have been as significant. These cars are truly amazing. I can't wait to see where the level of performance goes with these C6's. Nick "Kook's headers"
Instructor
Joined: Aug 2004
Posts: 166
Likes: 0
Originally Posted by jschindler
6 mph with 22hp???? This makes absolutely no sense.
I hate to be so blunt, but there are some pretty wild claims going around about the mods on C6's. The before and after's just don't add up.
Please give us your thoughts on why it would pick up 6mph with just 22 hp.
I hate to be so blunt, but there are some pretty wild claims going around about the mods on C6's. The before and after's just don't add up.
Please give us your thoughts on why it would pick up 6mph with just 22 hp.
As stated above, the gains are throughout the power band, not just at the peaks. Look at the Dyno chart and you'll see that the headers added horsepower and torque at every point along the power band. Much more area under the curve.
The formula for calculating horsepower from trap speed does not account for increases throughout the power band, just a simple calculation based on race weight and mph.
Just my thoughts. Anyone else?
Last edited by strokster; Oct 12, 2004 at 10:12 AM.
Safety Car
Joined: Apr 2004
Posts: 4,097
Likes: 10
From: East Coast
Originally Posted by jschindler
6 mph with 22hp???? This makes absolutely no sense.
I hate to be so blunt, but there are some pretty wild claims going around about the mods on C6's. The before and after's just don't add up.
Please give us your thoughts on why it would pick up 6mph with just 22 hp.
I hate to be so blunt, but there are some pretty wild claims going around about the mods on C6's. The before and after's just don't add up.
Please give us your thoughts on why it would pick up 6mph with just 22 hp.
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Team Owner
Joined: Jun 2001
Posts: 26,714
Likes: 344
From: Houston, TX
Originally Posted by STEALTH 99 C5
You also have to take into account that part of the gain in ET and MPH is the car was run at two different tracks , on different days , and the car did in fact pick up 6 mph over that last time it was run , the weather , and area under the curve and peak gains all had something to do with it . So it does make sense .
My intent is not to question the value of the headers. I believe they are a good mod, and worth the money.
I guess I'm just becoming a little ornery seeing some claims that don't make sense. No offense to anyone.
Le Mans Master
Joined: Nov 1999
Posts: 7,695
Likes: 51
From: Imperial Beach CA
Originally Posted by STEALTH 99 C5
You also have to take into account that part of the gain in ET and MPH is the car was run at two different tracks , on different days , and the car did in fact pick up 6 mph over that last time it was run , the weather , and area under the curve and peak gains all had something to do with it . So it does make sense .
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 855
Likes: 11
You also need to consider that a car running 13’s will gain more MPH and lower the ET’s with a 20 HP gain then a 10 second car. The ten second car may only gain 1 tenth and 1 MPH.
I also agree that the gain is across the power band and not a peak only gain.
I also agree that the gain is across the power band and not a peak only gain.
Racer
Joined: Sep 2003
Posts: 381
Likes: 0
From: Atlanta Georgia
Originally Posted by jschindler
That is part of the problem. When a manufacturer advertises that his product picked up 22 hp, and gained 6mph, he is implying that the product is the reason. The 22 hp I fully believe. The 6 mph I don't. Sure, I understand the car really did pick up 6mph - but the implication that it is due to the headers is what I questioned.
My intent is not to question the value of the headers. I believe they are a good mod, and worth the money.
I guess I'm just becoming a little ornery seeing some claims that don't make sense. No offense to anyone.
My intent is not to question the value of the headers. I believe they are a good mod, and worth the money.
I guess I'm just becoming a little ornery seeing some claims that don't make sense. No offense to anyone.
If I take my car to Commerce it would run a 110-111 MPH, Steele it would run a 111-112, then to Reynolds it would be a 113-114. So if I baselined my car at Commerce and ran a 110 mph, then added 22 HP and took it to Reynolds, I'd probably run a 115-116. The 6 mph gain wouldn't be just from the added HP, it would be because I went to a lower altitude track with different grip.If you are going to post claims, perform your testing in as controled environment as possible, at least go to the same track.
Le Mans Master
Joined: Nov 1999
Posts: 7,695
Likes: 51
From: Imperial Beach CA
Originally Posted by JHooligans
If I take my car to Commerce it would run a 110-111 MPH, Steele it would run a 111-112, then to Reynolds it would be a 113-114. So if I baselined my car at Commerce and ran a 110 mph, then added 22 HP and took it to Reynolds, I'd probably run a 115-116. The 6 mph gain wouldn't be just from the added HP, it would be because I went to a lower altitude track with different grip.If you are going to post claims, perform your testing in as controled environment as possible, at least go to the same track.
Instructor
Joined: Aug 2004
Posts: 166
Likes: 0
Originally Posted by STEALTH 99 C5
You also have to take into account that part of the gain in ET and MPH is the car was run at two different tracks , on different days , and the car did in fact pick up 6 mph over that last time it was run , the weather , and area under the curve and peak gains all had something to do with it . So it does make sense .
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 855
Likes: 11
In actuality we baselined the car at Etown, and then installed the headers. The next day we ran at Capitol, and then a few days later at Etown. The track results were from the same track (Etown), and with nearly identical weather conditions(the DA was within 50 feet for the different days). We monitor the weather conditions carefully while we test to ensure the most accurate results. I was the only driver for the aforementioned runs. There will always be some variations due to the driver and track prep. I posted my best stock numbers and my best header numbers so everyone can see the results. I do not work for Kooks, and I sell multiple brands of headers. I don’t believe in dyno testing only, you do not race and drive the dyno. I prefer to see real world results.
Racer
Joined: Sep 2003
Posts: 381
Likes: 0
From: Atlanta Georgia
Originally Posted by Dave_Busch
In actuality we baselined the car at Etown, and then installed the headers. The next day we ran at Capitol, and then a few days later at Etown. The track results were from the same track (Etown), and with nearly identical weather conditions(the DA was within 50 feet for the different days). We monitor the weather conditions carefully while we test to ensure the most accurate results. I was the only driver for the aforementioned runs. There will always be some variations due to the driver and track prep. I posted my best stock numbers and my best header numbers so everyone can see the results. I do not work for Kooks, and I sell multiple brands of headers. I don’t believe in dyno testing only, you do not race and drive the dyno. I prefer to see real world results.
Melting Slicks
Joined: Aug 2002
Posts: 2,737
Likes: 2
From: California USA
Originally Posted by Dave_Busch
After a lot of testing we picked up 22HP and 22TQ. We used the 1 3/4" headers and high flow cats. Every thing else is stock. On the track we picked up 4 tenths and 6 MPH. They make more power rite off idle and all the way to the rev limiter. This is power you can really feel. The dyno graph will be posted tomorrow.
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 855
Likes: 11
Originally Posted by JHooligans
Just a question, do you think the 13.1 @ 109 was a tad slow for a 6 speed car, I'd consider Etown one of the fastest tracks, especially this time of year with the cooler air.
When we base lined the car, the weather was hot and humid. The DA was 2100’. Etown is at sea level but the track prep is horrible unless it is a national event. Atco usually has better track prep and is also at sea level. MIR and Cecil in MD and Bradenton in FL are 3 of the fastest tracks I have raced at.
There has been a big weather change hear over the past few weeks and it requires us to rebase line with the current mods, before testing other components. We have gone as fast as 12.3 @117MPH. This is with headers, cats, tstat, fan control module, BFG drag radials, line lock, and experimental torque management eliminator module. The weather was better than our previous runs but we didn’t have any traction. The sixty-foot was a 2.1 and the DA was 920’.