Hi. I have an intermittent miss fire when on boost but only once warmed up. I'm pretty sure it's one of my coilpacks bur I want to make sure I have the correct gap on the plugs. I'm running copper bkr7es I think . The cars a version 1 wrx impreza .
Cheers jon

 

around 0.7 / 0.75 should be fine - on an early car coil packs are an issue purely down to age (or mis-use)

 

Thank you for the reply. I plan on doing the later coilpack conversion very soon

 

Its a Good conversion to do,c oil packs are a little fragile IMO.my early 95 wrx suffered all sorts of temp and load related missfires that I always mistook for boost cut or bad plugs .lol.as soon as I upped the boost over 1.2 bar it had a MAJOR bang at high engine loads that scared the poop out of me loll
after fitting newage coils it would happily boost at 1.9 bar ,clean as a whistle