i really like the thought of being able to make any adjustments thats why im hoping to hear from some mcc users to see how user friendly it is what size tune are you running from gearhead youve got my attention
Matt's (gearhead's) tunes are awesome, I also ran them on my 6.4. I ran hot street and race mostly. They both shifted awesome, low on smoke, insane power, pedal felt stock until you really got into it (which was very nice, for me atleast). As for adjustments, if there are any problems with your tunes, or things that need tweaked, Matt will do that for you. When I got my tunes from him he sent me them within a couple hours of my paypal payment, which was pretty late at night, might I add.
For power, all the big tuner's highest tunes are around the same peak hp/torque levels. They are all good options, but after my first go around with Matt I decided I will continue to do business with him.
And lastly, if you get the big tunes you better set aside money for a new set of tires, because trust me they don't last long!