The DiabloSport S1000 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 vehicles equipped with this option. 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 always stay in V8 mode without reprogramming or re-flashing the vehicle's onboard computer (ECU). This product will also disable DFM on 2019-2022 GM 5.3 and 6.2 trucks.