Jim dyno tuned my truck about a week ago and said right off the bat on my first dyno run that plugs were gapped too much and needed to be about .034 and I was getting spark blowout... he could tell by the sound!!

just wanna say this... Jim knows his stuff, changed today and they were at .046

 

My tuner had me close them down as well.

Rich

 

holly chit!!!

my buddy just called (one doing the plugs for me)

the first one was at .046..... but that was the best one.... some were in .05 and .06 range!!!!

he said only problem im having now is TRACTION... cant keep it from spinning under 30mph

whoohoooo