The Dsp5 Switch by Fish Tuning for your GM 6.6 Liter Duramax is designed to work seamlessly with EFI Live Tuning on your LBZ or LMM. It allows you to change your tuning on-the-fly, offering greater flexibility. Please note that tuning is not included - you must have Dsp5 tuning already installed to use this switch.

Details:

• Engine Manufacturer: Duramax
• Liter: 6.6 Liter
• Engine Designation: LLY, LBZ, LMM
• Engine Years: 2006-2010

Applications:

• 2006 Silverado/Sierra 2500HD/3500HD LLY
• 2006-2007 Silverado/Sierra 2500HD/3500HD LBZ
• 2007-2010 Silverado/Sierra 2500HD/3500HD LMM