ste-vanturbo2000

seems to run fine and revs fine wen just sat there but wen i drive it theres no power,sounds like its missin and wen i let off de power i get a bang out the exhaust any ideas?

mje_wrx

iTrader: (6)

check ur coil, plugs, leads, the bang cud be unburnt fuel leaving chamber down exhaust

ste-vanturbo2000

i av checked all that think it might b air mass its got a orange label air mass on it n a standard sti ecu the last owner that had the engine was runnin 380 bhp so gonna try that now

mje_wrx

iTrader: (6)

yeah maf can cause loose of power big time, so can failing fuel pump, also check all vacuum pipes etc for any holes, not sure what inter cooler u have, but check all joins in there also, if fmic, they look clamped but can be loose.

must have a fair spec for 380bhp.