i checked the pipes and there is no rust.. Where could the leak be and how would i find it? i am losing a good amount of power when it does this its like its bogging out but only between 4500 and about 6k and then it runs fine. Also i noticed that it doesnt do it so much when its cold outside becuase during the day it will do it most of the time but at night when it cools off it runs fine and will only do it sometimes. Im going to change the plugs and wires tomarrow to see if that helps..

 

No check engine light im guessing?

This either sounds like a boost leak or a bad o2 sensor... what one im not sure

 

no the check engine light isnt on. man i hope i dont have boost leak.. doesnt that mean i gotta rebuild the turbos? if so how much does that run and would it be around the same price as buying some upgraded turbos?

 

No all it means is that there is a small air hole in the piping. If you wish to do it yourself, you can make a boost leak tester.

Any major smoke from the exhaust?

 

oh ok i thought it was more serious than that. but theres no smoke except a little bit before the car warms up but after that theres no smoke. could it be a dirty air flow sensor thats what a mechanic friend said to check.

 

It is my belief that it would trigger the check engine light. I think a boost leak is far more likely

 

I have this same problem on my car i pulled out the cat and put in a test pipe. im thinking its doing it because of that and i was going to buy a high flow cat to see if that would help. does anyone know that might be the problem?

 

HIgh flow cats are a wate of money...NO they are pointless

 

what can i do to stop the backfire. if i get a ecu reflash would that help.. and if my turbos are leaking how can i check for that

 

Your turbos are not leaking. They are connected to pipes so that the pressure they create is transfered back into the engine... what im saying is... in this guys case there is a leak on the pressure lines some place.

Backfiring on a turbo car under hard acceleration is PERFECTLY normal.