Wierd problem!

I have a 93 del sol Si i put a turbo kit on it about 6-7 months ago. Heres the problem if i rev the motor let off then hit the throttle again it cutsd out and if you keep it held the car will just rev down and die but if you let off it will stay running and drive fine it also does it when driving and shift it to second or any gear and hit the throttle to quick it will do it. If you easy into every gear it wont do it. Ive replaced the throtle body put new injectors in it plugs. I have no idea any help would be awesome Thanx!

Is it tuned or are you, God help us, running an FMU and a MAP bypass?

Sounds like a fuel issue to me also.

No i took the fmu off after i got the adj. fuel pressure regulator, and injectors. and yes i have a mapbypass for right now until i get the computer chipped.

Sounds like you're leaning out real bad. Just a reg won't fully compensate for boost. IMO, take the turbo off untill you can pay to get a real ECU tune done. It's worth every penny.

im not gonna take it off im just gonna buy a new walbro pump cause i think its messed up cause sometimes it comes on when you turn the car on and sometimes it dont