No one can find this problem (someone help)!

[babyviper]

Well i built my girl freind a 97 gts spyder converted auto to manual . My problem is the car will not boost past 9-10 psi !! . mods are crower 264-272 14b turbo 7cm, willy 255 pump , afpr 43.5 psi.ngk non protruding 7es plugs 3' down piple 3' exhaust test piple on, hallman bc. jeff (dsm chips) chip. Iv done a boost leak test 10 times compression test from timing belt side is 145psi 175psi 177psi 170psi . Iv change 14b turbo with another one samething 9-10psi ?? it has no exhaust leaks!!!! (Iv even put vice grips) yes vice grips on the wastegate flapper on the exhaust housing The car is very slugish almost got walk by a scion tc WTF Please Help

 

[cookmeup272]

Cylinder one has the problem....

 

[babyviper]

You think that would cause it not to go over 8-10psi Iv seen car with low compression across the bored and still have 20 17psi ??

 

[cookmeup272]

I don't think you should be beating and boosting a car with that much of a compression difference unless you want to do more damage to the motor.