OBDII CSP5 SOTF Switch for EFI Live - Pass Through - 2006-2018

The pass through OBDII connector allows other devices to be used at the same time as the CSP5 switch.

CSP5, EFILive's custom operating system for the Cummins CM2200 and CM2350B ECMs, allows you to switch "on the fly" between several different tunes, all stored in the ECM's flash memory. With multiple tunes instantly accessible, you no longer need to re-flash your ECM to change tunes for changing conditions (racing, towing or power limiting, for example). Simply build your tunes, flash the ECM once, and then select your desired tune using the SoCal Diesel CSP5 switch.

**Warning**
Do not flash through the CSP5 pass through connector. The CSP5 switch must be unplugged to read and write to the ECM.