NGK Iridium IX plugs gap

[hungryjoseph]

what gap do you recomend? it's on a s14 SR with 10psi on stock turbo, with fmic

[Blown240sx]

Iridiums come pregapped because the tip on the plug is so fine it break easyly but if your careful I would check to make sure is .030

[S13FASTBACKSR]

the more boost you run/ the more power the lower your gap should be..the less boost you run/ the less power the higher your gap should be...i agree with .30 on your setup

[hungryjoseph]

should my gap be different at 12 - 15psi?

[S13FASTBACKSR]

12-15 psi i'd prolly gap at 29..it really depends on what psi you are going to run your car at..say you run your high boost at 18 then i'd gap it to .28..but then you have your boost off and running 7 psi or you have low boost at 13 or 14 you can still have it at .28...the gap isnt really going to affect your drivability at all unless its waaaaaay off...its just going to give you better performance when matched at what boost you are running..do you see what im saying? i hope this helps.

[Blown240sx]

.028 is the limit that I would gap them. .03 should be fine IM running 15 psi on a GT35R with .03 with no problem.

[hungryjoseph]

thanks guys! this helped me alot

[S13FASTBACKSR]

same here i'd gap no less than 28

[DrifterProdigy85]

My Iridium 7 plugs are gapped at .030. No misses when running 19psi.