2001-2007 6.6L Duramax EFILive Custom Tuning

It is highly recommended to monitor EGTs on Levels 4 & 5.

Got an aftermarket turbo, bigger injectors, or other badass mods? We've got the EFILive tunes to unlock the full potential of your Duramax! Boost performance, crank up the horsepower, and take total control of your diesel. Choose from Levels 1-5 or get all 5 for maximum versatility. Need to switch between tunes on the fly—whether you're daily driving, towing, or dominating the track? Grab a switch for Shift on the Fly and put the power right at your fingertips!