Sometimes when booting my turbo, it will misfire at about 5-6k rpm, with some flamage action out the exhaust. The engine was origionally tuned to run at 16psi but i got it running at 8psi at the mo, could this have anything to do with the misfire. its phase 2 by the way.
Got new dizzy, plugs (problem got better when i changed these) and coil fitted so what could it be, bearing in mind its intermitant.
could it be over fueling due to the boost being turned down.