Reviewed By Brian N (Wetumpka, AL) Reviewed for a 2014 Chevy Corvette —9/6/2016 10:51 AM
so far I have tried it only on the performance mode and have not taken it to a track to see actual #'s ,however i have taken a short run inroads I normally travel abiding the speed limits and trying to get mileage and have exceeded normal mpg.up and down hills garage to garage and over 35 miles 31.7mpg.I'll try it on a road trip and reset it to best mileage program. I'll let you know what happens. I do hypermile when safe. It is great to have all the power and still be able to economies.