at a loss
 

ok i have no clue what the heck is wrong with the car, i changed the ICM the MAF and got a new coil pack for the cylender that had the missfire.. it still runs like shit. on decelloration its all funny if there is a heavy load on the motor, like in 4th gear if you are at half throttle or more on decelloration it like hickups and jerks.. sometimes its smooth though. also sometimes on acelloration the car has massive missfires or thats what i think it is, the boost goes nuts it pops fire shoots out my tail pipes and the car dosent want to go anywhere.. any one have any ideas as to where i sould go from hear.. thought maybe i might have an injector that is sticking open, going to change those next.. any thoughts

RE: at a loss
 

you must be getting some fault codes logged with that sort of problem??

RE: at a loss
 

not a single one.. i check every day.. the only time i got a code was when i had 4 guys in the car all over 200lbs and i just kept my foot in the gas when it started missfireing and acting up all i got was a misfire code in cylender 1

RE: at a loss
 

what plugs are you using ?

RE: at a loss
 

have you upgreaded the fuel pressure regulator to take into account of your mods?? sounds like you run out of fuel at high revs like hitting the rev limiter

http://images.google.co.uk/images?q=...egulator&hl=en

RE: at a loss
 

Have you done any logs yet?

RE: at a loss
 

yea i have it set to 5 bars, thats why i thought i may have a bad injector..

RE: at a loss
 

5 Bar that seems high what are your mods ?

RE: at a loss
 

thats what the GIAC non pc-16 file calls for.. the shop set it.. the car ran great for the frist 4 months with the file one night it just started.. i just hit the gas the car had a massive misfire I think and shut off, started it back up and it has run like crap ever since

RE: at a loss
 

check the timing belt hasn't jumped a tooth or two, putting that much pressure on the engine could have do that