Header Install
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Originally Posted by Sol
Since the headers are lowering boost, is that going to hurt low-end performance?
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Originally Posted by PontiacDad
At the same time I'm going from a 3.8" pulley to a 3.3" so I hope to gain boost. 11-12psi is my target.
However, your going to gain about 20HP with the headers, and probably 25 or so with the pulley. A 45HP gain you are REALLy going to notice. I thought 25HP was a big gain. Just wait till you drive this when your done! heh....
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Originally Posted by Sol
Because it breathes better, will it help milage as well?
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Originally Posted by Sol
Because it breathes better, will it help milage as well?
Originally Posted by Sol
Since the headers are lowering boost, is that going to hurt low-end performance?
An L67 with the stock M90 blower will handle ~11-12psi boost without an intercooler without getting KR. So when you do an exhaust mod that lowers the boost, you want to raise the boost back up to the same amount of boost as you had before the exhaust mod. On your own car you will find the level where it starts to get KR, so when you go to a smaller pulley, you just need to make sure that you are running the same amount of boost as you were before the exhaust/valvetrain modification, but generally it is 11-12psi.
Shawn
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I was going to put them in this weekend but I have a bad cold right now and not sure if I'll be up to it. Call me silly but I dont want to slug through this install and just get it done, I want to enjoy it and take it all in. I hope I feel better by saturday :(