I have heard of issues with it, but it's easy to uninstall. It is always on my standard setting when I start up (sport +2) . Like I said, only go to Eco mode when roads are really bad in winter. I think it's a bit overpriced, but, honestly, I love it. People that drive my Ram are really impressed, even hemi owners. My brother has a F250 Powerstroke and was blown away. So to me the Pedal Commander was the cherry on the sundae, the GDE tune was the whipped cream. The Eco mode does not change mpgs, nor does Sport mode. The GDE Tune, however adds another 2-4 mpgs! I filled up yesterday, drove on a relatively flat stretch of road at 55 mph granny driving, EVIC was showing 45 mpg! By the time I got home, it was back to a normal 34 mpg, still pretty darned good for a 6,000 lb Crew Cab 4x4 truck. You guys will be happy campers when GDE comes out with tuning!:grin2: