We are experts in cylinder deactivation!

I have a flowmaster super 40 with dual outlets on my Silverado.
The AFM Disabler has worked perfectly from day one. I am so happy not to deal with v4 anymore.

Michael S.April 12, 2016

My Camaro SS is like a brand new car now. No more shuddering vibration and annoying 4 banger exhaust noise. Thank you Range for my full time V8. 

PatonMarch 16, 2013

Right on! Does what it is supposed to do. I still have a warranty and it’s nice to know I can just unplug it before taking it in.

J. StapulaonApril 5, 2017

Bought this to shut down the AFM and it does just that. It got rid of the hesitation of switching between 8cyl and 4cyl mode. I recommend this to everyone I know that has a Suburban with AFM.

J from NEMarch 12, 2017

If I could give 5 stars out of 5, you would have it. I am extremely happy with my purchase. The craftsmanship of the afm disabler appears to be excellent and flawless. … I have my Range sticker on my rear window, displayed for all to see. Thank you again!

MikeNov 27, 2018
All the power, all the time
Range AFM Disabler

AFM Disable Device

Keeps your vehicle in V8 (or V6) mode.
Disables 4 (or 3) cylinder mode for
GM (AFM) Active Fuel Management vehicles
and also Start/Stop disable for GM vehicles

All the power, all the time
Dodge MDS Disabler

Dodge MDS Disabler

The Range MDS Manager keeps your Hemi in V8 mode for Dodge (MDS) Multi Displacement System vehicles

Enhanced fuel economy
Range AFM Plus

Fuel Economy Device

The Range AFM Plus works to enhance the factory Active Fuel Management functionality to save you gas and money over the lifetime of your vehicle.

It took over 8,000 hours and more than 100,000 miles on the road to develop technology that customizes your vehicle to suit your driving needs.