hey i have a sc at 11psi and i am adding 75 wet shot.. i have the fuel pump and all that stuff... i am trying to decide how many step colder and what gap spark plugs i should get? I am thinking 2 steps colder and like .3 gap?? does that sound about right?

 

Yeah I'd do 2 steps colder with a .030 gap as well.... I'm turbo'd with no nitrous yet and at 10 psi, I was getting light detonation, even with an ok a/f. The 2 step colder fixed the problem ( I was at 1 step before). Good luck.

 

Additional question........I have an 03 and picking up some 2 step colder plugs to run with my spray. Does the gap specs of .030 apply to me as well? Not sure if it was the same for the 4th gen as it was the 5.5 gen. Thanks

 

Yeah gap sepcs are the same... only thing is, since you're running a colder plug - you *may* not have to gap it quite so low.