yeah, you kinda have to know a bit about electronics to understand what my brain was kinda spitting out,

. I've kinda picked up electronics as I've probably rewired just about every electronic accessory in my car.
Some more knowledge:
Resistance is measured in ohms. Basicly, the higher the ohm #, the higher resistance is put on the power flow. Therefore, less power is allowed to pass through the resistor (or in this case the temperature reader). I'm not sure about the other temps, but I heard from someone else that @65*, the AIT gives a rsistance of 2.2K ohms and that tells the ECU what the temp is so it can adjust accordingly (to prevent detination)
When it comes to this mod, it tells the ECU that it's always 65* outside when it could really be 95*. The ECU adjusts to advance the timing, and bam, you get detination b/c the timing's too high for the real outside temperature.