This switch is required to change power levels on the fly. This switch also works for LML’s tuned with EZ…

CTT is proud to offer transmission tuning for your Allison 5 and 6 speed equipped Duramaxes! Our transmission tuning will…

2 Required per Truck   L5P requires 10

For existing customers wanting to upgrade from a single tune to DSP, you’ll need this and a DSP5 switch.

DoD Advanced Tuning Trans Tuning MUST SEND A STOCK ECM READ TO   Support@CTTTuning.ca  MUST HAVE ORDER NUMBER IN SUBJECT…