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What gap do you guys set your plugs 2 my ngk pfr7bs have come pre gapped at 0.8mm is this right or do i need to re gap them is for a 2004 sti running 331bhp cheers
I have these installed on my classic, and they are set to 0.7mm, seem to run fine (they were set to this out of the box, but I checked just to make sure) - I would suspect yours should also be set to 0.7mm but not 100% sure mate
They should run fine at 0.7mm but if you're running more than stock boost (as you are if you've re-mapped to get 331 - 1.4 bar?) then 0.65mm gives less chance of spark blow-out
Cool, thanks - I'll do that. Still running standard at present (OP running 331, mine is standard V4 sti classic), but looking for re-map soon so it will be worth doing