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 come pre-set at 0.7 (but always check them first) and will be fine but ideal if you can re-gap them to 0.65 it will run better.

 

cheers guys for that i will re set the gap to 0.65mm

 

Should I re-gap mine to 0.65mm as well?

 

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

JohnD

 

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

 

I'm running 1.5bar with standard gaps (0.7mm) with no problems what so ever . My 7's came with 0.7 gaps, are you sure there set to 0.8?

 

Dave is that on standard internals I have a turbo 2000 runing 1.5 bar runs fine just a bit concerned as I think the boost is high

 

Just fitted some, mine were gapped to .8mm and regapped them to .65mm