sherlock, not to regress but here's a post where you add a resistor on a switch in place of the IAT. It sends a constant temp voltage level to the PCM that is warm enough to maintain closed loop and other fueling tables something like 60* C would work. You then change one row of coolant temp spark correction table for that specific temperature range. It's been used to retard spark when switching on nitrous. http://www.hptuners.com/forum/showthread.php?t=41946
