i have been having a few issues with my 05 gt turbo, i run a cartuning turbo kit a-a i/c etc . this is weird though, the car runs good most of time and i can mash on the pedal no problem, but at times when i go to hit it, car just shuts down,fuel pump turns off and for some odd reason brakes go out as well, but i have full power lights radio etc. i would have to take the keys out wait a few mintues before even starting it up. i am taking the car to zzp thursday night but just trying to see if maybe someone has had an issue with the 04+ grand prix turbos. any suggestions help!!! sick of car shutting down at times.....