Automotive accessory that keeps GM V6 and V8 engines running on all cylinders, preventing Active or Dynamic Fuel Management from dropping cylinders. Drivers who want consistent power and simpler engine behaviour get instant, plug-in control with Range Technology AFM/DFM Disabler. Is the change relevant for every owner of a GM vehicle?
⚡ At a Glance
- • Cylinder Control: Keeps V6 and V8 GM engines in full cylinder mode, preventing AFM/DFM from deactivating cylinders
- • Best for: Owners of Buick, Cadillac, Chevrolet, GMC and other supported GM vehicles who want constant engine power
- • Not ideal for: Vehicles without Active or Dynamic Fuel Management, or drivers who prefer cylinder-dropping for fuel economy
Plugs into the onboard OBD-II port to prevent AFM/DFM systems from dropping cylinders. Compatible with a range of GM V6 and V8 vehicles.
Consistent Full-Power Performance with OBD-II Plug-and-Play
Connection to the onboard OBD-II port activates the unit instantly, interrupting AFM/DFM commands that drop cylinders and keeping the engine in full-cylinder mode.
Immediate switch to full-cylinder operation delivers steadier throttle response and predictable power for towing, overtaking or everyday driving.
Simple Installation with Plug-and-Play Connectivity
Designed to plug directly into the diagnostic OBD-II socket, the unit begins working instantly without additional programming according to the product description.
Quick setup suits drivers who need an immediate change, allowing activation at home or on the road with minimal fuss.
Wide GM Brand Compatibility with Support for V6 and V8 Engines
Listed compatibility includes Buick, Cadillac, Chevrolet, GMC, Holden, Isuzu, Pontiac, Saab and Suzuki vehicles equipped with AFM or DFM systems.
Broad fitment means many owners of GM-sourced V6 and V8 cars and trucks can maintain full-cylinder operation.
✨ The 4 Key Reasons for Range Technology AFM/DFM Disabler
- OBD-II Plug-In — Instant activation without programming or vehicle modification required.
- Consistent Driveability — Stable throttle response for towing and overtaking on demand.
- Wide Brand Compatibility — Fits many GM-sourced V6 and V8 models across brands.
- Immediate Full Power — Maintains full cylinder operation while fitted for predictable performance.
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Compatibility: V6 and V8 GM vehicles with AFM/DFM systems
- Supported brands: Buick, Cadillac, Chevrolet, GMC, Holden, Isuzu, Pontiac, Saab & Suzuki
- Installation: Plug into onboard OBD-II port
- Operation: Keeps engine in full cylinder mode at all times
❓ Frequently Asked Questions
Q: How is the unit installed?
A: Simply plug into the vehicle's onboard OBD-II port and it begins working instantly according to the manufacturer description.
Q: Which vehicles are supported?
A: Compatible with V6 and V8 GM vehicles and listed brands including Buick, Cadillac, Chevrolet, GMC, Holden, Isuzu, Pontiac, Saab and Suzuki when fitted with AFM or DFM systems.
🏆 Our Verdict
Suitable for owners of GM V6 and V8 cars and trucks who prefer consistent full-cylinder power over occasional cylinder deactivation. Plug-in OBD-II operation prevents AFM and DFM systems from dropping cylinders, delivering predictable throttle and towing performance. Simple installation and broad brand compatibility make it a practical upgrade for drivers seeking immediate, full-time power.
