Spark Plug Gaps

[dronizm5]

I just got denso iridium plugs from sunit. I did not get the 2 step colder plugs. I was just wondering if someone could tell me what the gap should be set at with my mods including an stage II ap? Or if someone could redirect me to a thread. thanks

 

[FrequentFlyer]

I'd go with .028 at Stage 2 boost levels. I've gotten occassional high RPM studder/misfires at .032.

 

[meicalnissyen]

nuthin like high BMEP and crap spark to fuel a gap debate (hand)

 

[dronizm5]

I have heard that .028 is best with an ap somewhere else as well. I will try that and see how it goes.

 

[MSMS3]

.028 or even .026. Try .028 first. And yes, one step colder is plenty. I think this is covered, both heat range and gap, in AP's instructions and on Cobb's web site.

And hoping not to offend, but the "search" function here really does work and this has been covered many times.