The DiabloSport Sprint Module allows for maximum power and vehicle performance by disabling the factory Active Fuel Management (AFM) feature that drops cylinders and reduces power. The Sprint will also shut off the Auto Start/Stop feature on 2019-2020 equipped vehicles. Easy installation. Just plug into the OBDII port under the dash and drive. Compatible with GM vehicles built from 2005 to current that feature Active Fuel Management (AFM). Eliminates hesitation on acceleration and annoying exhaust buzz caused by AFM activation. Enables vehicles with AFM to stay in V8 mode at all times without reprogramming or re-flashing the vehicle's onboard computer (ECU). Note: This product does not shut off the DFM, (dynamic fuel management) feature on 2019-2020 vehicles. If your 2019-2020 vehicle is equipped with DFM instead of AFM, you will need a different device to shut off DFM. Please contact our team for more info if you have a DFM equipped vehicle. Sprint will still disable Auto Start/Stop on DFM equipped vehicles.