I have a 50 80 100 chip from Jody and I don't really use the 50 unless I'm towing. I have tested all of the setting with my normal driving and I get the best mileage in the 100 setting(depending on how much fun I'm having). I got mine set up for towing and the 50 setting lets me have better control over shifting. I tow a lot in the 100 setting too but it can be hard to get it to shift and get the tc to lock up when merging onto freeways and stuff. It wants to run the rpms higher before shifting (not enough throttle pressureto lock the tc at low speed I think). That isn't a problem at all in the 50 and 80. Anyway that's my 2cents, I love it! You've got a lot of fun ahead of you.