The GDP GDP410016 DSP5 Switch for your Diesel works in conjunction with the GDP EFILive and EZ Lynk Tuning. With the DSP5 switch, you can change your tuning "on-the-fly", with just the turn of a knob. Tuning not included, you must have DSP5 Tuning for use with this switch.
Features:
- 5-Position Switch
- For Use With DSP5 Tuning