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05 5.7 magnum tuner won't allow transmission firmness
Posted: Fri Mar 07, 2014 5:11 pm
by titusalvarez
When I try tuning the cars transmission firmness by selecting increase, the unit says it's not supported and the Tcm may need updated. But I don't know what that means or how to do it. Please help!!
Re: 05 5.7 magnum tuner won't allow transmission firmness
Posted: Fri Mar 07, 2014 5:27 pm
by mikel
this indicates its an early build 05 model, that needs the TCM updated by the dealership for these options to work
Re: 05 5.7 magnum tuner won't allow transmission firmness
Posted: Sat Jan 10, 2015 1:10 pm
by karnage42
You can update the tcm with the predator correct by downloading the updated calibration.