What is this thing you guys call KR??? I think it has somthing to do with the TB temp or something could use help

KR stand for Knock Retard. Knock retard is the amount of engine timing that is retarded or removed to stop predetonation within the cylinders. The pcm monitors the engine through knock sensors, the amount of noise is a learned thing and acceptable levels are allowed. Through hearing noise and knowing which cylinder is about to fire, the pcm knows where the predetonation and can tell you which cylinder is misfiring.

KR is Knock Retard. Here is an excellent article about it untill we get one in TechInfo.

Knock Retard

If your planning to do any modding on the engine you will need to scan for KR, otherwise you risk wrecking your engine. It can be controlled once you understand it.