Hello,
i drive a german Subaru Impreza WRX STi (My 04) with 2.0l (Stockversion 265 hp), added APS Parts, an SR-40 turbo, 800ccm Injectors, bigger TMIC, 3" APS Exhaust System and so on...
The car runs well, also under 4.000 rpm...the problem over 6.000 rpm is, its kind of knocking even with really low turbopressure...we see that on the knock link sensor from link...and u can also hear it over the headphones...
Someone told us, it could also be not a knocking but sparkfailure/misfire ?
We already changed the spark plugs and the sensor for the crankshaft, but it doesnt help...
Under 6.000 rpm the car runs stable...when we replace again with stock ECU, its runs again without any problems...so it sounds like a problem with the software i think...
Can anyone tell me, what could be the problem ?
thanks in advance
