Range Technology RA002 V4 Fuel Economy Module - AFM Plus

Save fuel by keeping your engine in 4-cylinder mode as much as possible Simply plug in Range into your onboard OBD-II port and it instantly begins working with your Active Fuel Management to optimize your fuel economy Range AFM Plus optimizes your performance by better identifying your driving situations helping you get more miles out of a gallon of gas. The average driver will save $250 a year.