DiabloSport® (GM) Active Fuel Management Plug-In OBII Module
DiabloSport® (GM) Active Fuel Management Plug-In OBII Module
DiabloSport® (GM) Active Fuel Management Plug-In OBII Module


DiabloSport® (97-21) GM Active Fuel Management Plug-In OBII Module

Regular price$269.95
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    Compatible: (5.7L/6.0L/6.2L/7.0L)

    2004 - 2019 Cadillac CTS-V

    1997 - 2019 Chevy Corvette

    1998 - 2002 Chevy Camaro

    2010 - 2021 Chevy Camaro

    2007 - 2021 Chevy Silverado

    2007 - 2021 GMC Sierra

    1998 - 2002 Pontiac Firebird


    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 DiabloSport Marathon Module helps you get better fuel mileage by enabling your V8 engine to behave like a four-cylinder engine when cruising, while still allowing for full V8 power when you need it.

    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).

    Saves fuel by allowing vehicle to stay in 4-cylinder mode 80% of the time as opposed to only 35% from the factory.


    Pending 50 state legal emissions


    This part is legal for sale or use on Racing Use Only Vehicles
    The following vehicles are considered Racing Use Only Vehicles:

    • Racing Use Only Vehicles are vehicles that are used exclusively for competition that aren't registered and that may never be used on the street

    WARNING: It is against the law to install this part on an Emissions Controlled Vehicle



    User Manual: