DSP5 SOTF Switch

The Spelab DSP5 SOTF Switch is a high-performance tuner engineered for seamless integration with EFI Live's DSP5 tuning system in 2011-2016 LML 6.6L Duramax trucks. This device enables drivers to toggle between up to five custom-tuned programs in real-time, eliminating the need for OBD2 reflashing. It is crafted with premium materials, including a durable aluminum knurled knob for enhanced grip and heat-resistant wires with split loom protection, ensuring reliability under demanding conditions. The driver-centric design allows for convenient mounting inside the cabin, such as on the dashboard, switch panel, or center console. For optimal functionality, the vehicle must be preloaded with a compatible EFI Live DSP5 tune or EZ LYNK that supports multiple maps. The switch requires specific wiring connections: the yellow wire to ECM Pin 11 and the black wire to ECM Pin 35, with wires routing through the driver-side firewall grommet. This product is intended for off-road use only. The switch offers five distinct modes tailored for various driving scenarios: Economy for daily driving and fuel saving, Light Tow for small trailers, Heavy Tow for maximum torque with large loads, Performance for rapid acceleration and highway driving, and Race for track days and ultimate power. It is specifically best suited for 2011-2016 Chevrolet Silverado and GMC Sierra LML Duramax trucks already equipped with compatible EFI Live DSP5 tuning.