KD Custom ECM programming for Duramax LLY
All tunes are built as dual mode switchable but as these vehicles age I recommend not adding a switch. The tuning will default to the lower HP level which should be plenty safe for a stock transmission. The higher HP will push the limits of the stock transmission. Typical tune sets are 50 HP econ/tow and 80 HP performance tune. While I make no claims or promises, the 50HP economy tune has been producing very consistent economy numbers at around 19-20mpg and even higher for single rear wheel trucks. DSP2 switch sold separately.
“This item requires your ECM be sent in OR exchange ECM can be provided.” – JK
Sub-Category: Duramax LLY