Sorry, I forgot to add that I plan on getting a tuned PCM as well during this phase.

About the t-stat... how much knock does going from a 195 to a 180 really remove? I don't understand why 15* (if that) would make so much difference when you're talking about autoignition temperatures which are in the neighborhood of 536*F.

Has anyone tested how much knock is removed by going to a colder t-stat?