Fish tuning DSP5 Switch for EFI Live tuning LB7 Duramax

By adding the DSP5 switch to your EFI Live tuned Duramax, you can change tunes on the fly. That means no more waiting on a programmer to download changes by reflashing the computer through the OBD2 port. With the installation of this switch, changing tunes is as easy as reaching over and turning a knob! The tune must be setup for the switch. Features: Includes PCM pins for installation Mount anywhere Changes tunes on the fly