Full power. All the time.

The Range AFM Disabler Device keeps your vehicle in 8 cylinder mode 100%, preventing the Active Fuel Management system from dropping cylinders.

This is the only product that will disable Active Fuel Management without reprogramming the factory ECU. Full power delivery all the time without factory warranty concerns.

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Get the most out of every mile.

Learn about the benefits of Range.

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Full Power

No more shuddering or dropping cylinders. Range AFM Disabler keeps you in full power 100% of the time.

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Bad weather, going off road, or carrying heavy loads, Range V8 delivers the power and control you need in any situation.

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fast easy fuel savings

Fast and easy setup

Simply plug in Range into your onboard OBD-II port and it instantly begins working to eliminate the AFM system. No tools needed!

See how to install

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The Range V8 does not reprogram your factory ECU. Leaves no trace. ONE MODULE FITS ALL GENERAL MOTORS (GM) ACTIVE FUEL MANAGEMENT (AFM) VEHICLES! Includes cars, trucks, SUVs both V6 and V8!


Range plugs into your vehicle’s OBD-II port located under your dashboard.

An OBD-II port is the same port that mechanics use to run engine diagnostics or to evaluate emissions.

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