Welp, i just got my wideband commander setup and it is a beautiful thing! However, i have one question.

I have my wideband warning light set up so that if i pass 3600 rpm and the a/f is above 12, the warning light comes on. (this is great)

However, there is an option in the software so that if my throttle position is in a certain position the warning light can also come on. How can this help me? Actually i am not quite sure of what the TPS does for me? It's pretty much just how open the throttle is correct? Is this just similiar to an over-rev indicator?