Okay I have an 01 GT that has a vortech supercharger, power pipe, hooker Super comp long tubes, o/r x-pipe, magnaflow cat-back, and a couple of other things. In first and second I get pretty good 8-9 psi at redline but when I go into 3rd it drops off to 4 or 5 at best. Is ts there something I should be taking a look at here or is it normal. And fourth suffers even worse. The one header leaks some off and on and my clutch and throw-out bearing are going out. The clutch has got to the point where driving gets kinda jerky and it squeaks a lot. It seems that it starts to seize up in 3rd and 4th and doesnt' accelerate as hard. I get my clutch fixed this weekend but I was wondering if I should look for something else. So any suggestions or input would be appreciated.

 

Your clutch wouldn't effect the performance of the blower. If anything a slipping clutch= engine spinning faster creating more boost. Your exhaust leak wouldn't effect it either. You either have a vacuum leak in your lines somewhere or you are getting belt slippage. But even with those prognosis' you should have the same problems in every gear. Areyou taking your car all they way to redline in 3rd and 4th?