[megabadcummins]

Was waiting for the Max Energy to come out for 6 months now it finally has, as of Friday. Called Hypertech and they said it won't do tire size! Do you guys want to tell me your triumphs and horror stories so I can figure out which chip that does tire size and has power to put in my 06 3500 cummins Megacab? Thanks ya'll.

 

[Dodgezilla]

The Predator is supposed to do tire size but mine doesn't. I believe that there is an update that has fixed that issue though. I think the SMARTY will change your tire size and do a whole lot more....