Kooks Revised F body Header
1 3/4" will work fine on cars up to 525-550 rwhp. 1 7/8" will take you from there to 700 rwhp. 2" is for anything bigger than that.
That being said...there are differences in design that will improve performance. Kooks for instance will be longer than the SLP's and have the merge collector, and venturi spike...so you may find 5-10 HP or more depending on how modded your car is. That is going from 1 3/4" SLP to new 1 3/4" Kooks.
And to the ***** that said it wasn't Kooks fault I ruined my ypipe, NO **** dumbass, I never blamed them. But since it was their ypipe, I figured that would be the people to call to look into getting a replacement. Hell you wouldn't call MAC if you broke your DELL would you?
Last edited by myfast70; Sep 15, 2008 at 05:02 PM.
If you go back and read, I apologized and edited my comments. I simply posted a comment and was just surprised. I'm happy that you know how to increase font size and use the bold function. No move on.
Last edited by The Alchemist; Sep 16, 2008 at 09:46 AM.
Just try not to ruin your next one as we don't want to hear you bitching again. I'm done with this thread.
+1. I didn't notice any difference (cept sound) going from Macs to long tubes.
TECH Regular
Joined: May 2004
Posts: 405
Likes: 1
From: Knoxville, TN
Because QTPs used the be the lesser expensive HVMC LT until now. Shoot, I'd have paid a little more for Kooks with HVMCs if they were close to the same price as the QTPs because of the leaks I have. They're better because I've packed the backside of the collector spike with manifold repair but I don't think it will last long; and DON'T tell me yours don't leak unless you've done some sort of pressure test on them. I was able to both SEE (I stuffed a flashlight into the backside of the merge collector and could see light through the spike) and HEAR (I completely sealed the exhaust ports and AIR ports, the 02 bungs, and pressurized the system and could detect and hear air leaking from the collector) the leaks. If Kooks has overcome this, kudos to you.
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TECH Enthusiast
Joined: Jul 2007
Posts: 647
Likes: 1
From: new iberia la.
today i spent mostly removing the oem exhaust, what a job that was, those friggen manifolds and cats must weigh 40 lbs, each 'tommorrow i will start with the motor mount then instal the kook's lt's and y pipe and slp cat back' cant wait to crank it up, great looking header, i have the old style,
