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Thumbnail Filmstrip of 2004.5-2005 6.6L LLY Duramax DSP5 Switch Fish Tuning FTDSP5LLY Images
Fish Tuning DSP5 Switch (FTDSP5LLY) – LLY Duramax
The Fish Tuning DSP5 Switch (part # FTDSP5LLY) lets you switch between up to five custom EFI Live DSP5 tunes on the fly in your 2004.5–2006 GM 6.6L Duramax LLY. No laptop, no reflashing, and no pulling over—just turn the switch and change power levels instantly while driving.
Key Features
- On-the-fly tuning — Cycle through five distinct tunes (typically Stock/Economy, Tow, Street, Hot, and Race/Max) with a simple rotary switch.
- LLY-specific design — Purple/black wiring and correct pin configuration for the LLY ECM (pins 32 and 50 on the grey connector).
- Complete kit — Includes aluminum knurled knob, 1–5 position decal, high-temperature rated wire, 1/8" split loom tubing, and installation instructions.
- Easy DIY install — Straightforward plug-and-play style installation once your ECM is flashed with a compatible DSP5 tune.
Important: Tuning is not included. This switch requires an existing EFI Live DSP5-compatible tune already loaded in the ECM. It will not function with a single (non-DSP5) tune.
Perfect for LLY owners who want real-world versatility—efficient daily driving, safe towing power, and high-performance modes available at the turn of a knob.
Fish Tuning DSP5 Switch (FTDSP5LLY) – LLY Duramax
The Fish Tuning DSP5 Switch (part # FTDSP5LLY) lets you switch between up to five custom EFI Live DSP5 tunes on the fly in your 2004.5–2006 GM 6.6L Duramax LLY. No laptop, no reflashing, and no pulling over—just turn the switch and change power levels instantly while driving.
Key Features
On-the-fly tuning — Cycle through five distinct tunes (typically Stock/Economy, Tow, Street, Hot, and Race/Max) with a simple rotary switch.
LLY-specific design — Purple/black wiring and correct pin configuration for the LLY ECM (pins 32 and 50 on the grey connector).
Complete kit — Includes aluminum knurled knob, 1–5 position decal, high-temperature rated wire, 1/8" split loom tubing, and installation instructions.
Easy DIY install — Straightforward plug-and-play style installation once your ECM is flashed with a compatible DSP5 tune.
Important: Tuning is not included. This switch requires an existing EFI Live DSP5-compatible tune already loaded in the ECM. It will not function with a single (non-DSP5) tune.
Perfect for LLY owners who want real-world versatil[...]
Fish Tuning DSP5 Switch (FTDSP5LLY) – LLY Duramax
The Fish Tuning DSP5 Switch (part # FTDSP5LLY) lets you switch between up to five custom EFI Live DSP5 tunes on the fly in your 2004.5–2006 GM 6.6L Duramax LLY. No laptop, no reflashing, and no pulling over—just turn the switch and change power levels instantly while driving.
Key Features
- On-the-fly tuning — Cycle through five distinct tunes (typically Stock/Economy, Tow, Street, Hot, and Race/Max) with a simple rotary switch.
- LLY-specific design — Purple/black wiring and correct pin configuration for the LLY ECM (pins 32 and 50 on the grey connector).
- Complete kit — Includes aluminum knurled knob, 1–5 position decal, high-temperature rated wire, 1/8" split loom tubing, and installation instructions.
- Easy DIY install — Straightforward plug-and-play style installation once your ECM is flashed with a compatible DSP5 tune.
Important: Tuning is not included. This switch requires an existing EFI Live DSP5-compatible tune already loaded in the ECM. It will not function with a single (non-DSP5) tune.
Perfect for LLY owners who want real-world versatility—efficient daily driving, safe towing power, and high-performance modes available at the turn of a knob.