I am an 18 charger. Dusterhoff stage 4, jokerz full tilt/108mm kong, legmaker, catless, blah blah E85 and at an idle or low speed the IAT1 (pre-blower) is absolutely tarded. IAT2 seems to hover at about a 30-40* delta (from either ambient or i/c coolant. Can't remember) and will drop a hair once fresh air hits the blower then climbs as expected. Think peak in the heat was 175? No KR though from any source and no timing was being pulled. Likely due to the leeway E85 can give you.
Doesn't seem to be hurting performance but it does annoy me a good bit. If not for being on E85 at the track I'd probably have ventilated the block by now.
I think I'm just gonna skip the tank and do a chiller eventually. Gonna have 500-1000 in a good ice tank/emp pump and plumbing. Base chiller is what...1700?