hey guys
i know what your going to say 'search is your friend'. but i have read them and think i still need some help before blowing good money on aftermaket coil-packs i didnt need.
after installing a powerfc and upping the boost, the car has developed a misfire in two places. the first only happens about half of the time, when coming on boost at wot and low rpm, say 2900. and the second happens all of the time, at 5000rpm+ on full load. the tuner tried to get around it but thinks its the coil packs and couldn't really do much about it.
mods include: bkr7evx platinum plugs, hks fmic, cam gear at 3.5deg., powerfc, evc5 at 0.9bar, 3" full exhaust, shielded pod. te rest is stock turbo, inj, internals, manifolds etc...
i'm thinking one of the following:
collapsing pipe between tubo and afm
fatigued coil packs (highly likely)
air leak (unlikely - all new hoses and clamps etc.)
afm (dirty - i will ask the tuner if the voltage was ok, im sure he would have checked tho, if it was bad this would also eliminate the collapsing pipe)
plugs (fouled - i did the plugs myself at home, drove the car 20km to the dyno, not sure if they would foul up in this time)
any input appreciated.
-rb25