Very interested in a tuner! Couple questions though. Is there a tire size calibration on it? Can you list what modifications you have? (CAI, Exhaust, ect...) Also, I pull a 12ft enclosed trailer with my explorer. Never the less I was slightly unimpressed with the pulling capabilities of the v8. Alot to do with my 3:55 gear I'm sure. But I don't want to create Trans issues having a performance tune uploaded while pulling a trailer.