Ok.........................
2..1 z24 2.4L twin cam 5 speed supercharged with the m45 gm kit. stock 2.8" pulley. coil swap conversion with msd coils. TR6 plugs gapped at .028. i had them at .030 , .035 and so on but no real difference. Coolingmist meth injection with whatever nozzle that comes with it. The car is getting a misfire at high rpms (like really close to redline and it seems to only be in 4th gear) I keep throwing a p0300 code, random/multiple cylinder misfires. now it does it with or without the meth hooked up so im really in the dark with this one here guys. What the hell is going on with my car???? its also got the rsm aluminum crank pulley and motor mounts. i ran a 14.8 @ 92mph last sunday at the local track and it was throwing codes around 5k rpm in 3rd on that day also. I pulled my plugs to check them and they are like a light tan/ sand color. No black soot or anything.
01' Z24 5 speed
422whp/400wtq
T4 Turbocharged
Built LD9
HP Tuners
bump
01' Z24 5 speed
422whp/400wtq
T4 Turbocharged
Built LD9
HP Tuners
sounds to me like your runnin a little lean, do you have a wideband? if so what does it read when you get your misfire?
Veritas Aequitas
no wideband. im thinking about investing into one of them though. im gonna buy hp tuners here soon so i can tune the car a lil better.
01' Z24 5 speed
422whp/400wtq
T4 Turbocharged
Built LD9
HP Tuners
i need HP tuners, but have a UEGO. but my guess would be that you are getting to lean at your upper RPM range and your engine ain't liken it. Mine did the same thing till i put in bigger injectors. I guess 310's weren't enough....
Veritas Aequitas
