yeah ive searched, im well aware of the various problems of missfirings and their solutions. however read on. I just got my 25 package running in my 32, still running stock turbo and ecu, all it has is cooler, exhaust and a boost controller atm. Boost is set at 0.7 bar max. Now the car drives fine down low, and pulls quite clean and smooth until about 5000 rpm at WOT. above this it hesitates like a misfire would some times it even starts to clean up before getting worse around 6500ish.
the motor has new plugs, have inspected coil packs and all of them have their spings (no carbon ectrodes like RB20 plugs tho?) all are clean and not cracked in anyway.
not sure what else it could be?? any ideas?
Cheers
Simon