THE ECU HACK IS A WINNER! Check out the awesome results of modding the air temp sensor. The Hack was a success in multiple categories. So here they are in data form. I'll let the numbers do the talking :)
Not only is there better fuel efficiency, but I also saw an additional 10rpm, and 2kts in speed all while burning 5-7% LESS fuel. She runs smoother and the pipes are no longer "black" but now a more "tan" color where they should be! The difference in CHT's is only about 3 deg.F warmer.
This $20 mod now gives me an addition 100 miles of range and around $13 of fuel savings on every tank. Now I just need to find a way to install it in the airplane permanently.