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JMS PedalMAX Drive By Wire Throttle Enhancement Device (11-18 All)

Market Price $346.99 You Save 17% ($57.99)
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  • Item 390273
  • MPN# PX-5000-1114F

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    Features, Videos & Details

    • Eliminate Pedal Lag
    • Improves Vehicle Acceleration
    • Enhances Low and Mid-Range Horsepower and Torque
    • Eliminates Stalling of Manual Equipped Mustangs
    • Easy Plug & Play Installation
    • Stackable with Common Aftermarket OBD-II Programmers
    • Fits All 2011-2018 Mustangs

    Review & Installation Video

    Hey, everybody, I'm Justin with, and this is my detailed review of the JMS PedalMAX throttle enhancement device available for your 2011 and newer GT V6 and EcoBoost Mustang. In this video, I'll talk about some of the benefits of installing the JMS PedalMax on your S197 or your S550 Mustang and we'll touch on the install itself. And right up front, guys, I'm gonna tell you this is a plug and play job. One out of three wrenches on the difficulty meter but we will have a little bit more detail coming up later on. The JMS PedalMAX is going to appeal to the S197 and S550 owners out there looking to eliminate that annoying throttle lag that can sometimes be a little problematic with the newer drive by wire cars. Now, this thing can be used with or without your favorite custom tune and JMS even claims a little bump in low-end power and torque. But I don't want you guys to get hung up on power numbers because that's really not what the JMS is all about. So with all that said, let's take a closer look at this product. Now the days of having a cable-controlled throttle body are unfortunately a thing of the past. I'm gonna probably sound like an old guy here but I personally prefer having a cable-controlled throttle body to the newer drive by wire technology because I know the moment my foot hits the floor that throttle body will be wide open. With the newer drive by wire cars, the moment your foot hits the floor a signal gets sent to a computer, the computer tells the throttle body to open. Obviously, all this stuff happens very quickly but if you have driven the newer drive by wire cars, you probably noticed the smallest bit of lag in between shifts, especially when you're really rolling gears. And that's where the JMS comes in. Now most of the drive by wire cars are set up or pre-programmed from the factory for the masses. So this means driveability comes first, performance takes a back seat to that. Unfortunately for a lot of us Mustang owners, performance usually takes top priority and the lazy factory throttle can sometimes get in the way of that. So what the JMS is gonna do for you is monitor that throttle signal in real time from your drive by wire setup and then reprogram or remap that throttle signal giving you enhanced throttle response in the process. JMS actually claims that this is going to make the car more manageable in heavy traffic situations or stop and go type situations where stalling can be an issue. This is even gonna help modern Shelby cars which I have heard through the grapevine can be a little difficult to drive for newer owners out there. Stalling can be an issue. JMS claims this really helps out the modern Shelby owners. Again, I can't attest to that personally as I don't daily a Shelby. So the JMS is gonna monitor that throttle signal in real time from your drive by wire application, reprogram it or remap it on the fly, giving you increased throttle response in the process. JMS actually claims that this is gonna help make your car more manageable in heavy traffic situations or stop and go type situations where stalling can sometimes be an issue. Right out of the box, the JMS is gonna give you maximum effectiveness or maximum throttle response the moment you plug this thing in. Now for whatever reason, it's a little too radical for you or maybe it's a little too touchy for your driving style, you can always plug in the included the red 4-pin connector which JMS claims will desensitize this thing by about 40%. So you are still picking up a good amount of throttle response over your factory calibration but the car shouldn't be as touchy. So in essence, you're getting two standard settings with the JMS right out of the box as this product sits right here. However, if you did wanna have the ability to kinda fine-tune your throttle experience using the JMS PedalMAX check out their optional control knob here on the site for another 50 bucks. It does give you a few more settings to play with, and it does give you the ability to kinda change this stuff up on the fly. Now that's something that's not exactly easy with the JMS as it sits right now because you'd have to crawl under the dash, either plug in or unplug that 4-pin connector we just talked about. Not exactly something you can do while at a red light or while on the road. Now as far as using this thing with or without a custom tune, that's entirely up to you. But what I will say is the JMS PedalMAX here will give you some of the benefits of going with an aftermarket tune but without having to flash the car. So for you owners out there who aren't ready to pull the trigger on a tune just yet, this would be a great way to give you some of those benefits with saving you some money in the long run. On the other hand, if you did wanna piggyback this on top of one of your canned tunes that you already have or maybe even a custom tune, that's something you can totally do as well. In fact, check out some of our customer reviews if you haven't done so already. A lot of our customers have actually done this with great success. Just check those things out for yourself. As far as price or value, the JMS will set you back just south of 300 bucks which I admit isn't the cheapest modification for your S197 or S550 but it's certainly more affordable than some of your custom tuning options out there. Now sure, you're not gonna be getting the big power gains from the JMS like you would with those custom tunes but there are still certainly benefits to be had with the JMS. Moving on to the install and honestly, like I said earlier, it doesn't get much easier than this. Simple plug and play job with the JMS, maybe a few minutes from start to finish. And you really don't need a ton of tools to get this one knocked out. JMS does recommend unplugging or disconnecting your negative battery terminal first before getting started with the install. After that simply climb under the dash, remove the plug connected to the top of the gas pedal. After that simply plug in the JMS to that sensor there, plug in the factory harness to the JMS, and your install is complete. So that's my review of the JMS PedalMAX for your '11 to '17 Mustang which you can get right here at

    Eliminates Pedal Lag. The drive by wire accelerator pedal of the 2011 to 2018 Mustang is well known for lag. If you have ever tried to speed up to merge with traffic you have most likely noticed a delay in throttle response. On older Mustangs the gas pedal was attached to a mechanical cable that ran to the throttle body or carburetor that provided instant feedback. However, on modern Mustangs the gas pedal is electronically controlled, similar to a dimmer switch, which has to send the signal to the ECU, which in turn sends the signal to the throttle body causing this momentary delay. To eliminate this annoying delay JMS created their PedalMAX Electronic Throttle Enhancement Device.

    Eliminates Stalling and Improves Power. The JMS PedalMAX will not only eliminate pedal lag, but it will also enhance throttle response, horse power and torque in the low to mid RPM range. The PedalMAX is also ideal for eliminating stalling when accelerating from a stop in manual equipped Mustangs, a notorious issue for the 2013-2014 Shelby GT500's.

    Maximum Throttle Response. Out of the box the PedalMAX Throttle Enhancer is preset to provide maximum increase in throttle response. If you find the stock setting to be to aggressive for your driving needs you can insert the supplied 4-pin RED de-sensitizing plug into the device. The RED de-sensitizing plug will reset throttle response to about 60% of the maximum setting. However, with the optional Remote Throttle Control Knob (part# BX-6999) you can adjust throttle response from zero to maximum or anywhere in between to match your specific driving style.

    Stackable. The JMS PedalMAX can be stacked or used in conjunction with other aftermarket OBD-II programmers and monitors such as: SCT, Diablosport, Hypertech, Superchips, Bully Dog, and Edge as well as JMS' own BoostMAX Performance Booster.

    Modern Electronics. The PedalMAX Drive By Wire Throttle Enhancement Device features JMS's exclusive state of the art digital technology housed in a proprietary sealed enclosure. The PedalMAX comes complete with plug and play wiring harness using OEM connectors for a quick installation.

    Easy Plug & Play Installation. The PedalMAX Throttle Enhancer simply connects to the factory stock pedal position sensor using an OEM style connector with no permanent modifications required. PedalMAX is 100% reversible making it warranty friendly.

    Application. This JMS PedalMAX Drive By Wire Throttle Enhancement Device is designed for use on all 2011-2018 Mustangs including the V6, EcoBoost, GT, BOSS, Shelby GT500 and GT350 models.

    Fitment: 2011 2012 2013 2014 2015 2016 2017 2018 Details

    What's in the Box
    • (1) PedalMAX Throttle Enhancer
    • (1) Plug & Play Wiring Harness
    • (1) Red De-Sensitizing Plug
    • (4) Zip Ties
    • (1) Mini-Screwdriver
    • Installation Instructions
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Boss 302 - 12, 13
    • EcoBoost - 15, 16, 17, 18
    • GT - 11, 12, 13, 14, 15, 16, 17, 18
    • GT350 - 15, 16, 17, 18
    • GT350R - 15, 16, 17, 18
    • GT500 - 11, 12, 13, 14
    • V6 - 11, 12, 13, 14, 15, 16, 17

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    11 Questions / 5 Answers

    Ask a Question

    Will this work with a Bama tuner?


    • If you have a BAMA tuner, you will not need this item.


    Helpful (4)

    Would this compliment or even be necessary if you have the Ford Performance Power Pack 2 since ECU tune is included with the power pack?


    • The JMS PedalMAX Drive By Wire Throttle Enhancement Device can be used with the Ford Performance tune, allowing further adjustability of the throttle. Wile this would be a benefit, this will see greater benefits on an untuned car, since most tunes will adjust the throttle over stock.

      Rob D

    Helpful (1)

    Can I install this if I have a Bama X4 Tuner?


    • Generally if you are using a handheld tuner on your Mustang then you already have an adjustment made for throttle enhancement. However, you can turn off the throttle enhancement from the tune and use this JMS PedalMax then you may experience better results. You will not find benefit out of this throttle enhancer if you already have a throttle adjustment made on the tunes your vehicle is running.


    Helpful (1)

    Hello, Can the JMS PedalMAX be used in conjunction with the MSD Launch Master 2 Step Rev Limiter?


    How does this compare to a tune? I have a CPO extended warranty so I am looking for ways to keep my warranty. I was debating getting this or possibly the procal ford tune that keeps warranty. But from my understanding that keeps or downgrades to a 3yr/36k. Will the difference be huge between the two?


    • The JMS PedalMAX Drive By Wire Throttle Enhancement Device does not compare to a tune. A tune maximizes horse power on all stock or specific aftermarket parts. This product is something the just gives you more off the line power and reduces pedal lag.


    Helpful (0)

    Will this product void my warranty?


    • According to the Magnuson-Moss Warranty Act, a vehicle manufacturer cannot void the warranty of your vehicle due to an aftermarket part unless they can prove that the aftermarket part was the cause of or contributed to the failure of the vehicle (15 U.S.C. 2302 (C)). This means that a vehicle's warranty cannot be "voided;" the dealer can only deny a claim if the stock part failed due to damage or unreasonable use.


    Helpful (0)

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    Customer Reviews (74) Write a Review

    Overall Rating 4.7

    out of 5 stars

    • Performance Gain 4.459459 4.5
    • Seat Of Your Pants Feel 4.716216 4.7
    • Ease Of Use 4.783784 4.8
    • Bang For Your Buck 4.337838 4.3
    • Preferred Tune: Performance

    • 5/5

      March 08, 2018

      Game Changer!

      I really enjoy the pedalmax I got my bbk 73 Throttle body and it was great.! But honestly I still felt lag so this is where this baby comes into play! Easy install, worth the money.


      Year: 2014 Submodel: V6

      Helpful (1)

    • 5/5

      January 28, 2018

      It is outstanding!!!!

      Take out your credit card and buy it ASAP!!! It is so good.


      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      November 30, 2017


      Pedalmax works great now I enjoy driving. It was a breeze to install


      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      November 24, 2017


      This little gem makes all the difference in “Get Up and Go” in my 2017 V6 Mustang. With JMS PedalMax the throttle response is NOW! There is no lag at all. It is a great improvement over stock and does not void your warranty. Installation was a breeze. Great product!


      Year: 2017 Submodel: V6

      Helpful (1)

    • 5/5

      November 13, 2017

      2017 mustang gt 5.0

      Works like it said no extra horsepower but instant throttle response.. easily breaks the tires loose in 2nd and 3rd


      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      October 21, 2017


      Kickass, It just changes the total performance of the car from a simple plugin device. The car hesitated in shifting and power prior than it changed everything from power to the wheels to shifting and it just opened the car up completely. Awesome


      Year: 2011 Submodel: V6

      Helpful (1)

    • 5/5

      October 17, 2017

      launch control

      I made a mistake wrote about the pedal max unit under pedal max remote control but just the same if you can afford it get it I would definitely advise that you get the remote control cable also so you can advance the control knob where ever you feel comfortable with, if not you'll feel like you're in a roller coaster being shot into space


      Year: 2014 Submodel: V6

      Helpful (3)

    • 4/5

      September 22, 2017

      Good product"

      Very good product, does what is claims, only concern I had a GT owner is my gas mileage changed significantly. still testing to see if product is responsible for a loss of 5 miles per gallon....


      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      September 17, 2017

      1st mod must

      Item works as expected. Easy install. Still getting used to new shifting feel as engine idles higher during shifts.


      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      September 11, 2017


      Well worth it makes all the difference in acceleration. Pulls harder


      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      September 08, 2017

      Good product

      Good product could be cheaper but works good. I enjoy the extra power I get on the acceleration


      Year: 2017 Submodel: V6

      Helpful (1)

    • 3/5

      August 29, 2017

      Works just fine.

      Install was a little tight. It helps if you are a small person. I am not. Took about 30 min. to install. Works GREAT. Took computer a little time to adjust. Took my right foot time to adjust to feel. Kept wanting to spin the tires.


      Year: 2014 Submodel: GT

      Helpful (2)

    • 4/5

      August 27, 2017

      Great improvement over stock! 2014 Focus

      I actually bought this product for a 2014 Focus and not a mustang so my feedback will not necessarily be applicable to other Fords. To start, I believe that drive by wire is one of the least satisfying aspects of the 2014 Focus if not the worst. It is so disconnected from the feel and function of a physical connection to the throttle that I strongly considered getting rid of the car altogether. The item from JMS did save that from happening for the mean time. The throttle response is much better throughout the rpm band but one thing I noted is that the revs do tend to hang a bit (likely emissions). If you're on the fence about whether or not to buy it due to dissatisfaction with your throttle in your 2011 to 2014 Ford, I would suggest it. It's a safe alternative to a tune as it won't void your warranty and it can be removed at any time.


      Year: 1994 Submodel: GT

      Helpful (1)

    • 5/5

      August 16, 2017

      works as advertised

      I can really feel the difference in throttle response! Makes it feel like the performance car that is in around town daily driving! No need for sport . Leave it in drive and go!


      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      July 31, 2017

      pedal max

      This product definitely works as advertised. Throttle response has improved dramatically . The Normal mode on 100 feels way more responsive than the sport mode before pedal max was installed. Sport mode is almost undriveable at 100. Put it between 50 and 75 and it works perfectly. I would highly recommend this if you don't want to put a tune on it.


      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      July 24, 2017

      S550 comes alive!!

      The product is super simple to install. Zip tie the excess wire and device securely and done!


      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      July 23, 2017

      Great addition while keeping the factory warranty

      Having purchased a slightly used 2016 Shelby GT350 recently, there is not much that is offered in the way of performance upgrades and keeping the factory warranty. I happened upon a couple of reviews on the JMS product and decided to try it since it is not a tune and keeps me within warranty boundaries. Install was easy and the power although it does not add power, it makes it feels more immediate and linear throughout the RPM range. I give it a thumbs up!!!


      Year: 2016 Submodel: GT350

      Helpful (7)

    • 5/5

      July 11, 2017

      Great Product.

      A must add for Auto GT guys with after-market mufflers. After installing the after-market muffler, I have noticed having to push down on the gas pedal a bit further to increase RPM due to lost of back pressure. The acceleration is more responsive and the low RPM muffler drone is also eliminated.


      Year: 2015 Submodel: GT

      Helpful (8)

    • 3/5

      June 24, 2017

      It works.

      A little pricey for what it is, but it works. Can only give it 3 stars because of the price.


      Year: 2015 Submodel: GT

      Helpful (5)

    • 5/5

      June 22, 2017


      Lots of kick and the car just drives better. More jump for sure. Works well with my BAMA performance tune. No regrets.


      Year: 2013 Submodel: V6

      Helpful (5)

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