Hello nathancruz702! Ive been running my bullydog GT for 2 years now and have also tried all three gas tunes. I will say that I like running the stock gas setting with the 2* advance and fuel economy throttle setting when just running around town or commuting to and from work. With that setting I have noticed an average of 15 to 16 mpg avg, city/hwy mix. When I tow the boat or a trailer, I use the regular tune for a little towing power. With the performance tune, I like it a lot when I have some regulating to do at stop lights or on the freeways. Just me in the Mada of course. The performance tune I've noticed has very aggressive transmission shifts as expected for a performance tune and is great for feeling the power of our 5.6's. With the Performance tune I run Supreme, no throttle restriction, extreme throttle response and +100rpm and VDC turned off. I have eaten several Hemi's with this one when they make fun of soccer Dad. Hahaha! My fuel economy drops back between 12 to 14mpg which is expected. Anyways, you have to try them all like everyone is saying to find what works for you in your situation or demands. Just remember, if you run the Performance Tune, you must use Supreme or minimum of 95 octane to prevent engine damage. Have fun and go getm!