Has anyone gained power switching from Hooker LTs to Kooks/QTP?
10-15-2005, 10:46 PM
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Has anyone gained power switching from Hooker LTs to Kooks/QTP? I'm just curious if anyone has seen a significant power increase on a cammed car by switching from Hooker or Pacesetters to QTP or Kooks headers. I know several people have seen nice gains switching from SLPs to other headers, but I don't recall seeing anyone swap their Hooker headers out.
Thanks,
Josh
Thanks,
Josh
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10-17-2005, 12:39 AM
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Originally Posted by Sharpe
10-17-2005, 02:47 AM
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Originally Posted by Order 66
There was someone a while ago that had jet hots and switched to qtp and gained 18hp.
Originally Posted by Sharpe
I agree on the bs call.
Durien is the one who went from Jet Hot LT's to QTP LT's (both 1 3/4") with the merge collectors.
He also switched out the crappy 2-into-1 Hooker y-pipe for the QTP y-pipe with a flowmaster collector, and Durien may have got a tune with the new headers.
Here' the thread.
https://ls1tech.com/forums/showthrea...&highlight=qtp
I think QTP's are a great header, but a 10 hp gain (I'm excluding the QTP y-pipe) is hard to believe over another set of LT's.
10-17-2005, 02:51 AM
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Originally Posted by SUX2BU
on a big cube motor it could be possible. i mean my friend got 10 rwhp and he's cam only.
10-17-2005, 02:52 AM
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Originally Posted by lilbuddy1587
Not quite, here at a shop in AZ a gentleman went from jethots(broke off the egr peice) Switched to QTP's and picked up a little over 12rwhp. No other changes but the headers.
10-17-2005, 06:20 AM
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the trouble with looking at numbers like this, is they are all pretty meaningless.
I mean you can chuck you're car on a dyno and do 5 pulls consecutativly and have numbers varying by 5-15rwhp with out any changes.
So the claim of 10rwhp gain doesn't really mean much, if it was done at a different location on a different dyno type on a different day.
Not to mention if any other changes where, such as tune or Y pipe or even cleaning the air filter.
The only way you could do it would be by back to back test under controlled conditions.
I mean you can chuck you're car on a dyno and do 5 pulls consecutativly and have numbers varying by 5-15rwhp with out any changes.
So the claim of 10rwhp gain doesn't really mean much, if it was done at a different location on a different dyno type on a different day.
Not to mention if any other changes where, such as tune or Y pipe or even cleaning the air filter.
The only way you could do it would be by back to back test under controlled conditions.
10-17-2005, 11:55 AM
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Originally Posted by Sharpe
It's possible. Velocity merge collectors in the header collector and in the Y-merge are huge factors.
10-17-2005, 01:27 PM
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Originally Posted by SouthFL.02.SS
Ah, the random, unwarranted BS post. I love these.
It's possible. Velocity merge collectors in the header collector and in the Y-merge are huge factors.
It's possible. Velocity merge collectors in the header collector and in the Y-merge are huge factors.
I think any lt's with a ypipe that has the 4" merge is gonna be pretty close. Even if the cheaper headers are down by 5hp you can spend money saved on a 5hp mod. If money is no object get the qtp's with hvm. Still I havent seen any true back to back comparisons.