Nails

My R33 has a similar exhaust setup and was misfiring similar to yours, I tried taking the coils out, having a look at them and cleaning them up with wd40 however that was obviously not enough, as after a week of OK operation it started running like crap again. I just put Spitfire coils in today, ordered from perfectrun for bout 465 all up, and it is running very smooth now.

I'm lookin forwards to it, will be there in my newly acquired maroon r33. It will be interesting to see how scary the haunted places are when 300 cars with sikm8 sik exhausts and neons turn up, but anyway =P