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Thumbnail Filmstrip of 2006-2021 5.9L / 6.7L Cummins CSP5 Switch Fish Tuning FTCSP5 Images
Fish Tuning CSP5 Switch (FTCSP5) – Switch-On-The-Fly for 2006-2021 6.7L Cummins
Take full control of your EFILive, MM3, Smarty, or RaceME tunes with the Fish Tuning CSP5 Switch (part # FTCSP5). This high-quality SOTF (switch-on-the-fly) rotary switch lets you change between multiple power levels, economy maps, or specialty calibrations instantly—while driving—without ever needing to reflash through the OBD-II port.
Key Features
- Clean, factory-style install with a replacement OBD-II pass-through connector
- Detachable switch with wiring, black aluminum knurled knob, and numbered 1-5 face decal
- Supports up to 5 tune positions (exact number depends on year and tune configuration)
- Works with EFILive, MM3, Smarty, and RaceME tunes
- Pass-through design still allows diagnostic tools or other devices to be used
- Remembers the last selected tune through key cycles
Fitment
2006–2021 Dodge/Ram 6.7L Cummins (also compatible with late 5.9L applications when properly tuned)
Important Notes
- Do not flash your ECM while the CSP5 switch is plugged into the OBD-II port. Always disconnect the switch before reading or writing to the ECM.
- 2018+ trucks using EFILive (and some other platforms) typically require the Fish Tuning Cummins Bypass Cable for proper flashing and switch operation.
- Your tunes must be properly configured for CSP maps by your tuner.
Mount the switch wherever it’s convenient—dash, console, or next to the OBD port—for instant access to the right tune for towing, daily driving, or performance. Simple, reliable, and built for real-world use.
Fish Tuning CSP5 Switch (FTCSP5) – Switch-On-The-Fly for 2006-2021 6.7L Cummins
Take full control of your EFILive, MM3, Smarty, or RaceME tunes with the Fish Tuning CSP5 Switch (part # FTCSP5). This high-quality SOTF (switch-on-the-fly) rotary switch lets you change between multiple power levels, economy maps, or specialty calibrations instantly—while driving—without ever needing to reflash through the OBD-II port.
Key Features
Clean, factory-style install with a replacement OBD-II pass-through connector
Detachable switch with wiring, black aluminum knurled knob, and numbered 1-5 face decal
Supports up to 5 tune positions (exact number depends on year and tune configuration)
Works with EFILive, MM3, Smarty, and RaceME tunes
Pass-through design still allows diagnostic tools or other devices to be used
Remembers the last selected tune through key cycles
Fitment
2006–2021 Dodge/Ram 6.7L Cummins (also compatible with late 5.9L applications when properly tuned)
Important Notes
Do not flash your ECM while the CSP5 switch is plugged into the OBD-II port. Always disconnect[...]
Fish Tuning CSP5 Switch (FTCSP5) – Switch-On-The-Fly for 2006-2021 6.7L Cummins
Take full control of your EFILive, MM3, Smarty, or RaceME tunes with the Fish Tuning CSP5 Switch (part # FTCSP5). This high-quality SOTF (switch-on-the-fly) rotary switch lets you change between multiple power levels, economy maps, or specialty calibrations instantly—while driving—without ever needing to reflash through the OBD-II port.
Key Features
- Clean, factory-style install with a replacement OBD-II pass-through connector
- Detachable switch with wiring, black aluminum knurled knob, and numbered 1-5 face decal
- Supports up to 5 tune positions (exact number depends on year and tune configuration)
- Works with EFILive, MM3, Smarty, and RaceME tunes
- Pass-through design still allows diagnostic tools or other devices to be used
- Remembers the last selected tune through key cycles
Fitment
2006–2021 Dodge/Ram 6.7L Cummins (also compatible with late 5.9L applications when properly tuned)
Important Notes
- Do not flash your ECM while the CSP5 switch is plugged into the OBD-II port. Always disconnect the switch before reading or writing to the ECM.
- 2018+ trucks using EFILive (and some other platforms) typically require the Fish Tuning Cummins Bypass Cable for proper flashing and switch operation.
- Your tunes must be properly configured for CSP maps by your tuner.
Mount the switch wherever it’s convenient—dash, console, or next to the OBD port—for instant access to the right tune for towing, daily driving, or performance. Simple, reliable, and built for real-world use.