hey guys need some help. i replaced the plugs on my '02 wrx and all the sudden started geting a blinking CEL. took it and got the codes pulled and it showed misfire on cylinder 2. the guy suggested plugs so i bought a whole new set and replaced them all with hopes that i had just gotten a bad plug but still getting the misfire. the CEL stays on and then blinks like 15 times and returnes the solid. doesn't seem to matter if i rev it up high or just idle it still misfires. car seems to run "ok" but idles a bit rough. so could this be the coil pack on cylinder number 2 and if so, which cylinder is number 2 and is there any way to test the pack before i spend $120 on a new one.
i don't have many mods but here they are:
Perrin uppipe and downpipe
short ram intake
boost control set at 15psi