Which V4 Product is right for you?
  • Range V4 Max
    Range V4 Max works with your factory installed AFM allowing your vehicle to drive in V4 mode up to 90% of the time, maximizing your fuel and dollar savings. The average driver can save approximately 65 gallons of gas per year or about $250.
  • Range V4 Plus
    Range V4 Plus is a less aggressive calibration than the V4 Max device and is intended for older 4 speed vehicles. The Range V4 Plus devices allows you to drive in V4 mode 60 - 70% of the time with an average driver savings of between 35 - 40 gallons per year, or about $150.
Time Spent in 4 Cylinder Mode
  • 35%
  • 70%
  • 90%
  • Factory Installed AFM
  • Range V4 Plus
  • Range V4 Max

Enhanced Fuel Economy.

Range V4 Max and V4 Plus optimize your performance by better identifying your driving situations helping you get more miles out of a gallon of gas.
Active Fuel Management, available on most GM trucks and SUVs, helps lower fuel costs by enabling V8 engines to behave like four-cylinder engines when cruising with light loads, while seamlessly unleashing their full muscle whenever needed.

Get the most out of every mile.

Learn about the benefits of Range.

Save up to $1700*
The average driver will save $250 a year. Over the lifetime of your vehicle that can really add up. See how much you can save by using our Fuel Economy Calculator
*based on V4 Max and an average vehicle lifespan of 7 years
Fast and easy setup
Simply plug in Range into your onboard OBD-II port and it instantly begins working with your Active Fuel Management to optimize your fuel economy.

See how to install
Save 65 gallons of gas a year
If you drive 15,000 miles, you will save an average of 65 gallons of gas a year. Saving fuel means saving money and time, with a lot fewer trips to the gas station.
*based on V4 Max
Save the planet
If all AFM powered vehicles were optimized it could save up to 193 million gallons of fuel per year. Less pollution and a lot less imported gas.
Installation:
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.
Still have questions? Check out our FAQs.

Fuel Economy Calculator

  • How many miles do you drive per year?
    The average driver drives around 15,000 miles per year
  • What's your average MPG?
  • What's your estimated fuel cost ($ / gallon)
    • Estimated savings
Frequently Asked Questions:

Will installing Range void my warranty?

No. Dealers are not allowed by law to void a warranty due to the installation of aftermarket parts. Since the Range device does not alter the normal operating conditions of the vehicle, it can't do damage.  It simply applies a power smoothing algorithm to ensure that the vehicle operates in its own 4 cylinder mode more often that the stock vehicle.  However, its always best to check with your dealer before installing, or better yet, have them call us directly.

Will Range affect my performance?

No.  Range does not alter the vehicle's ability to return to 8 cylinder mode when needed.  In heavy load situations (i.e., quick throttle, heavy throttle, uphill driving or towing), the vehicle will stay in 8 cylinder mode.  Range just allows you to drive in 4 cylinder mode when you don't need the power.  

Will Range damage my vehicle?

Absolutely not.  Range Technology has spent 2 years and half a million dollars testing this product to ensure safe operation.  We have driven these vehicles hundreds of thousands of miles to perfect the algorithm.  This product maintains all safety systems in the vehicle, but simply allows it to run more efficiently.

What is the 30 day satisfaction guarantee?

Exactly that. You can try the product risk free for 30 days. If you don't like it, we'll send you a UPS label to send it back to us for free and refund the whole purchase price. No questions asked. We know that our business is driven by word of mouth - so we don't want one unsatisfied customer out there.  

Is it hard to install?

Range installs in 5 seconds with no tools. Just plug it in and you are ready to save money on gas. Further, you can uninstall it at any time just by unplugging it. Please see the install diagram here.

Do I have to drive differently?

You don't have to change your driving style at all to save money. Just plug in Range and drive like you normally would. But here at Range, being obsessed with fuel economy, we know that the way you drive can also have an effect on your fuel economy performance, so we have aggregated a list of tips and tricks from our research that can help you drive more efficiently. Interested? Click here and find out even more ways to improve your fuel economy.