Doc, I have my cooling system separated. Mezier surge tank and using the factory tank for the IC with a CM30 and LET HE. I tried using ice at the track between runs and it does help. But I can sit for 30 mins and get cooled waaaay down. Enough so that my next run is good but if I hot lap, the following run (with the engine at temp) is better.

What I need is to get my IAT down significantly with the engine at good operating temp. Either a big aux tank for the IC with COLD water or some meth seem like viable options.....