AFM / DFM disablers
RA003B, RA007, and RA010 DFM Pro — removable, tool-free, no permanent modification.
Automotive performance electronics · Taiyuan, China
The original
AFM / DFM disabler.
The full Range Technology line: plug-in disablers that keep compatible GM V6 and V8 engines in full-cylinder mode, Pulsar LT inline calibrators, and Start/Stop disablers — installed in minutes with no permanent modification. Wholesale supply for sellers and workshops worldwide.
山西路在脚下贸易有限公司 · 汽车性能电子
RANGE TECH / FEATUREDRA003B
01 / LineRange Technology plug-in modules
02 / BaseTaiyuan, Shanxi, China
03 / InstallPlug-in · No tools
04 / SupplyWholesale · Export
What we supply
Three product families,
one standard of fit.
The complete Range Technology line: AFM/DFM and Start/Stop disabler modules, the Bluetooth-enabled DFM Pro, and Pulsar LT inline calibrators for GM trucks and SUVs — every product plug-and-play, removable, and matched to a specific application.
Pulsar LT calibrators
Throttle response, tire size, gear ratio, top speed, and AFM/DFM — inline, no ECM changes.
Start/Stop disablers
GM and Ford F-150 modules that end engine stop-start at every light — no ECU reprogramming.
Simple installation
Plug in. Drive. Remove anytime.
Every Range Technology module installs in minutes with no tools and makes no permanent change to the vehicle. Unplug it and the vehicle returns to its original configuration.
Plug in
The module connects to the OBD-II port in seconds — no tools, no wiring.
Drive
The status LED confirms the module is active; the engine stays in full-cylinder mode.
Remove anytime
Unplug the module and the vehicle returns to its factory configuration.
Featured products
Start with our best sellers.
The RA007 DFM Inline Module leads the line, joined by the RA003B AFM/DFM Disabler and the Bluetooth-enabled RA010 DFM Pro for GM refresh V8 platforms.
See the full range01DFM Inline Module
Dynamic Fuel Management / Auto Start/Stop disabler for GM refresh V8 trucks and SUVs — all-time V8 mode with no trace.
02AFM/DFM Disabler
Range AFM/DFM Disabler keeps you in full power 100% of the time — plug into the OBD-II port and it instantly begins working.
03DFM Pro
DFM Pro for GM Refresh V8 with Bluetooth control — disable DFM and Auto Start/Stop, adjust throttle sensitivity, and read codes from the app.
Compatibility
Confirm the fit before you order.
Fitment tables for every product — GM AFM/DFM platforms 2007-2022, GM refresh V8 2021-2026, Pulsar LT truck and SUV applications, and Ford F-150 Start/Stop. Not sure? Send us your year, model, and engine, or your VIN.
COVERAGE / SAMPLE
- GMAFM / DFM platforms · V6 & V8 · 2007-2022
- GMRefresh V8 trucks & SUVs · 2021-2026
- GMPulsar LT · Silverado · Sierra · Tahoe · Yukon · Canyon
- FordF-150 Start/Stop · 2015-2020
How ordering works
From enquiry to delivery.
- 01
Enquire
Tell us the product, vehicle application, quantity, and destination.
- 02
Confirm
We confirm fitment, price, and lead time — samples available on request.
- 03
Prepare
Orders are picked, quality-checked, and packed for export.
- 04
Deliver
We ship worldwide and stay reachable after the goods arrive.
Support
Quick answers.
The questions we hear most. Full FAQ, warranty, and returns information lives on the Support page.
01What are AFM and DFM?+
Cylinder-deactivation systems on General Motors V6 and V8 engines. The disabler keeps the engine in full-cylinder mode while connected.
02Will it void my warranty?+
The module makes no permanent change — it does not reflash the ECU, and unplugging it leaves the vehicle exactly as before.
03Can I leave it plugged in?+
Yes. It sleeps automatically when the ignition is off, with negligible current draw.
Work with us