Hi all. Just bought the new Bully Dog GT tuner for my 5.3 Silverado. I was just going to shut off AFM and TM, but I'm considering the performance canned tune. I'm happy with the trucks current shifting and horsepower. Or should I set the tune to performance? I went in to buy the Diablo, but they convinced me Bully Dog was better. Thanks
ThaChevyGuy
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