Throttle Body Coolant Plug..?
 

http://www.zzperformance.com/zzp/pro...tplug_info.htm

The logic behind it sounds good..but would there be any noticable difference?

i doubt that there will be any difference b/w havin the plug and not havin the plug

Any difference will probably be too small to feel. A 180 degree stat would probably have more of an effect.

not sure if i would make a difference but i hit my TB with a temp gun and it was 120deg at running temp of 180deg. so if you could lower the temp then iam sure of some performance gain but not sure of how much.

For starters, that will only work on a Series II. This is for the guy who's trying to get every little speck of horsepower for a track run. It might make a slight difference on a car that has been heavily modded.