Just picked up a set of denso plugs. i'm going to be running them with a 6lb lower in the future what should i gap them at?
thx

 

Johnnie L told my 0.038", JDM told me 0.040". I used 0.40" and plan on a 4# lower soon.
Chris S.

 

I used .040 with a 2# upper and 2# lower. With a six you could use .038 or .040 either one. I'd probably stick with .040.

 

I just put my 6lb pulley on and JL told me to leave them gapped at .038 so that's where I lefted them. I hope it works out good. I would think with the stock ignition and a lot more boost it would run better closed up alittle. My stock ones were at .040