Paul, you understand that the PCM will command timing and fueling based on the ECT right? You may foul plugs (or lose performance) if your running cool and the PCM pulls fuel and timing because it thinks its warmer than it is....just a thought.
Hope you're not just knocking the mod cause it came from the competition ZZP.
Actually, I think it has gained performance. The gauge indicates a steady 190 but when I pull the EStat connection, it is actually holding 160 - 170 F.
Getting the best fuel mileage I've even gotten and am easily able to run with the 3.2" pulley all the time now. I love it. The plugs are burning fine and appear normal.
I think the mileage has improved cause it doesn't stay in the overly rich condition during warm up as long as it used to.
I believe it to be one of the best mods I've done this year....next to the limited slip diff and your Harland Sharp rockers.