Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter Daily
Win An Eibach Sportline Kit! Enter Daily

JMS Digital Mass Air Modifer (11-20 All)

Market Price $493.00 You Save 13% ($64.00)
Our Price

$429.00 (each)

FREE Shipping

  • Item 399997

Will this fit your Vehicle?

Change Vehicle Help?
In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • Extend Dynamic Sensor Range
    • Adjustable Filter Window
    • Fine-Tune for Additional Power
    • Scales Mass Air Signal
    • Works with 12V or 16V Battery Systems
    • Wiring Harness and Installation Instruction Included
    • Computer Adjustment Not Needed
    • High-Precision Plug-and-Play design
    • Sold Individually
    • 1-Year Manufacturer Warranty
    • Fits All 2011-2020 Ford Mustang
    Get Accurate Setting. This JMS Digital Mass Air Modifier has a built-in feature that learns the idle characteristics of your vehicle. Scale and filter the mass air signal in real time on the dyno to save time and provide accurate settings.

    Quality Construction. This JMS Mass Air Modifier features a complete OEM-grade plug-and-play wiring harness using a shielded cable, advanced electronics housed in an aluminum case, and an optional onboard enable/disable switch.

    Clean Up Noisy Signal. Clean up a "noisy" signal area that might be causing a drivability issue by filtering the MAF signal. With a rotary switch, you can choose between 16 built-in levels of filtering to quickly change the mass air signal on the dyno in real-time, and see immediate results through OBD-II data logging. With unique filter ranges, you can fine-tune the filter to your problem area. The device operating voltage range is 9.5-20 volts DC, and it is compatible with 12V or 16V DC power systems.

    Plug-and-Play Installation. Easy to install plug-and-play design utilizes OEM connectors to eliminate splicing into the factory wiring harness making the process a breeze.

    1-Year Manufacturer Warranty. The Mass Air Modifier Product comes with a one-year limited warranty against any defects in materials or workmanship. Please check the manufacturer's warranty page for full details on the terms and conditions.

    Application. This JMS Analog Mass Air Modifier fits all 2011-2020 Ford Mustangs.

    Note: Not legal for sale or use in California or on pollution-controlled vehicles.

    Fitment: 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Details

    MPN# 4001F11

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Digital Mass Air Modifier
    • (1) Installation Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Boss 302 - 12, 13
    • Bullitt - 19, 20
    • EcoBoost - 15, 16, 17, 18, 19, 20
    • GT - 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
    • GT350 - 15, 16, 17, 18, 19, 20
    • GT350R - 15, 16, 17, 18, 19, 20
    • GT500 - 11, 12, 13, 14, 20
    • V6 - 11, 12, 13, 14, 15, 16, 17

      Customer Photos (1) Submit Your Photo

      View 1 Photo

        Q & A

        No questions about this product yet.

        Ask the First Question

          Customer Reviews (1) Write a Review

          Overall Rating 4

          out of 5 stars

          Installation Time:Afternoon

          • Performance Gain 4 4
          • Fit 5 5

          • 4/5

            Installation Time: Afternoon

            December 06, 2017

            Good for Supercharged not so much Turbo.

            This is really good alternative to an aftermarket MAF unit. It does work, but it is limited in how much it smooths out the Maf fluctuations. Can be used if FI to clean up the signal for better tuning, after reading the link I guess can be used to clean up if intake signal is dirty. Also,it can malfunction due to heat issues if it is set in the engine bay next to a Twin/Single Turbo Set-up. Best used for Supercharger/Procharger set ups. Less heat,or wire it up in the Glove Box on Turbo Setup.


            Year: 2013 Submodel: GT

            Helpful (9)

          Related Mustang Categories