well this weekend we discovered a vacuum leak at the BAC valve, and in the UIM beacuse i broke the long bolt that goes through the manifold. While having these vacuum leaks my car would boost perfectly fine and pull HARD, and i got the gaskets to repair the leaks and another bolt and now when i stomp on the pedal to boost all i get is a HUGE hesistation and no boost, but when under light throttle i can feel the turbo start to pull and if i stomp on it, no go. Any ideas people??

 

Please guys, I'd really like to figure out what this is, it just started out of no where, right after i replaced the gaskets..

 

Anyone? Also it seems like it's a 3500 rpm issue, but i odn't know why it would just start after the gasket replacement, if i give it WOT before 3500 it'll pull and then hit 3500 like a brick wall and then i hear a backfire. I can rev to the higher RPMS and if i try to go WOT it does the same exact thing in the RPM's above 3500. I have rtek 1.7, 720cc injectors in secondary, intake, and turbo back exhaust, and fuel pump.

 

Sounds like you knocked something loose during your gasket replacement. Much as I hate to say it, you might have to take the UIM back off. Possible you have a loose secondary injector plug.

Rat

 

It's possible i checked that, but i will look into it again.