Switch on the Fly Tune incl EFI Live Spade LWN (2018)

Get All Four Custom Tunes, Switchable while driving (Switch-On-The-Fly) Emissions Intact you do not remove your emissions equipment. Total flexibility to switch on the fly while driving between all five of our emissions in tact custom tunes for your Chevy Silverado or GMC Sierra. No need to plug in a clunky box to re-flash your truck to change tunes. Giving you the power to tow light or heavy, fun daily driving, and the most we can unleash from your engine. Have the cleanest and most reliable tunes available with the power level you need right at your fingertips. EFI Live SPADE hardware and switch included. Haven't made performance modifications to your truck? Check out our 50 State Legal Switch on the Fly Get All Five Custom Tunes, Switchable while driving (Switch-On-The-Fly) Do you need DuramaxTuner.com Switch-On-The-Fly (SOTF) Custom Tuning?