Rats65
Junior Member
Hello from Australia, I have recently perched a 2007 3500 mega cab with a 5.9 Cummins.
It has a mm3 tunner and a few other mods, I’m finding the auto is shifting a bit off and not what I would expect. Is this something to do with the mm3 tunner or something else ??
It has a mm3 tunner and a few other mods, I’m finding the auto is shifting a bit off and not what I would expect. Is this something to do with the mm3 tunner or something else ??
