Does anyone know or could estimate about how much of an increase in performance you would see/feel from getting the one step cooler NGK Spark Plugs?

 

It's not so much a power thing. It helps eliminate detonation. More air and more gas = hotter temps. The plugs are one step colder to help the situation. The gap of the plugs on the other hand have a little influence on power.

 

So what's a good gap for the SS/SC without a tune? I've heard people running .030 gapped with a tune.

 

My plugs are gapped at .38 and it works nicely. I don't know what the guys with tunes are gapping at. You will hear mixed emotions about gaps and what's reliable and what gives you the best performance.

 

thanks for the info

 

thanks for the info as well

 

No problem ya'll.