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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

    People Who Bought This Item Also Bought

    Most Helpful Reviews

    A Must-have mod

    I spent a few weeks making up my mind between installing a tune and installing the PedalMax device, but I didn't want to void the factory warranty. I'm glad I chose the JMS PedalMax. Easy to install (5 ...

    Read More
    Helpful (8)

    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 ...

    Read More
    Helpful (7)

    Overall Rating 4.7 out of 5 stars
    Read All 72 Reviews

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    10 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 (3)

    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)

    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?


    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)

    Has anyone used this on a 2017 GT yet. No green light and no pedal response and all kinds of crazy warning lights. Any fixes or ideas. Installed twice and did same thimh


    • Hey there, We do apologize to hear you are having troubles with your Pedal max device. Please give us a call/ email in and we would be happy to troubleshoot for you!


    Helpful (0)

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    Customer Reviews (72) Write a Review

    Overall Rating 4.7

    out of 5 stars

    • Performance Gain 4.458333 4.5
    • Seat Of Your Pants Feel 4.722222 4.7
    • Ease Of Use 4.777778 4.8
    • Bang For Your Buck 4.333333 4.3
    • Preferred Tune: Performance

    • 5/5

      March 30, 2017

      A Must-have mod

      I spent a few weeks making up my mind between installing a tune and installing the PedalMax device, but I didn't want to void the factory warranty. I'm glad I chose the JMS PedalMax. Easy to install (5 minutes). The car feels wayyyy more responsive, it is really fun to drive now. In my opinion, it is a great investment. I've never been so happy with a mod than now.


      Year: 2014 Submodel: V6

      Helpful (8)

    • 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 (7)

    • 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 (4)

    • 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 (4)

    • 4/5

      May 30, 2017

      Noticeable but not entirely necessary!

      Just installed the JMS PedalMax with the remote adjustment nob. Right off the bat you can feel and hear a difference! Less weight is required on the accelerator, it definitely feels like it picks up a little quicker now. In terms of the sound, it makes my Borla ATAK sounds louder than normal which is very loud. Love the product so far, bought the adjustment nob so I can turn it off when others drive my car, but not entirely necessary. I recommend to anyone that hates pedal lag and is looking to give there S550 a little more giddyup in traffic or wants a little more roar out of there exhaust.


      Year: 2016 Submodel: GT

      Helpful (4)

    • 5/5

      April 11, 2017

      Pedal max

      This is awesome, once you install it you will ask....why did it not come like this from the factory? Great throttle respo se when installed.


      Year: 2017 Submodel: GT

      Helpful (4)

    • 1/5

      October 03, 2016

      Defective Unit

      I was looking for something to eliminate the throttle lag that's common with Ford's Drive by wire setup. As such I ordered a JMS Pedalmax DBW enhancement device. The installation was pretty straight forward and I was excited to see difference in performance. I idled out of my garage and went to cross two lanes of traffic. When I hit the accelerator there was NO power, nothing. Fortunately I was able to avoid getting hit and limped my 2016 GT off to a side street. After what seemed like forever the accelerator finally responded. Thinking this may be an anomaly or the computer adapting I went off to work. The drive to work was okay, but acceleration seemed a bit choppy especially under load. After I finished the work day I started my Mustang. Much to my dissatisfaction the car had no power, AGAIN. After five to ten minutes the accelerator pedal finally responded and I took the car home. That was it, I had enough. I removed the unit and the good folks at AM took it back stating that they had had a few defective units. Guessing if the product would have worked properly it would have been a great mod.


      Year: 2016 Submodel: GT

      Helpful (4)

    • 5/5

      September 06, 2016

      Amazing Product

      I purchased this for my 2012 mustang v6 and I couldn't be happier. Easy to install and the results are amazing. I have this along with many bolt ons and the car is really fun to drive. It will take some getting use to driving your car with the PedalMax as it is very responsive and sensitive but it's amazing. I give the car about half throttle now and it takes off like it did before I had the pedalmax and hitting the gas pedal all the way to the floor. I would highly recommend this part as one of the first mods if you're just starting off or finished modding or somewhere in between. Little pricey but worth every penny! It will put a smile on your face


      Year: 2012 Submodel: V6

      Helpful (4)

    • 5/5

      June 24, 2016

      Throttle update

      ok so I got this JMS PedalMAX and it was very easy to install . I do have a tune from Bama and it is working great the car is very fast almost to fast but its the little things that I was looking at like hitting the pedal just a little it would go like way fast but it would take just a 1/2 sec. to kick in (lag) we are not talking about a big lag but a lag like ok go . now its like hit the pedal and gone . the idle is just a hair higher now . you don't get more power from it , you just get the power you have faster . my wife took it to the store with her friends and came back and said what did you do to that car ? I think it is a little over price but it works


      Year: 2012 Submodel: GT

      Helpful (4)

    • 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 (3)

    • 4/5

      May 09, 2017

      JMS Pedalmax

      Questioned this product for a while and finally got it. Major difference on interstate. Gets ride of a lot of lag. Great product!


      Year: 2016 Submodel: GT

      Helpful (3)

    • 5/5

      April 01, 2017

      Holy sh#t

      The combination of the stage 2 whipple, jms fuelmax and now the jms pedalmax will plaster you to the seat. Throttle response is insane with the addition of the JMS pedalmax.


      Year: 2016 Submodel: GT

      Helpful (3)

    • 5/5

      March 24, 2017

      A Must Have Mod!!!

      I wasn't sure I wanted to spend that much on this device but I'm sure glad I did!! I have the Level 2 Roush Power Pac on my ecoboost and as great as the Tune is as compared to stock, the car still felt as it was still lacking! This device literally woke up my car, it feels much more linear now , you just touch the throttle now and the response is instant! I find it's a lot smoother off the line now , the turbo seems to spool up quicker, and shifting is a lot smoother now as well! Installation was relatively easy, simple plug and play, hardest part for me because I'm a bigger guy was contorting myself to reach up under the dash! I'm not sure if there is any actual HP gain but it should the heck feels like it!! If you're looking for that true sports car feel I highly recommend this!!! Saving up for the BoostMax now!


      Year: 2017 Submodel: EcoBoost

      Helpful (3)

    • 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 (2)

    • 5/5

      March 21, 2017

      First mod

      This product does what they say it will do.. Fixes the sluggo throttle from the factory.


      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      March 17, 2017

      Worth every penny

      Wow, this completely finished off and rounded out every mod I've done to this car. I've had the car for two years and in lower gears especially putzing around town in 25-30mph zones, the car felt like it would "gear down" or -- not quite stall -- but definitely the power arc would go down. To get the car to remain at RPM, if I gave a little tap to the pedal, the car would "come back." But for such a great little machine in every other respect, this was a blot and a disappointment. Why didn't it just remain at RPM?! I thought it was the tune and switched from a Bama tune to a MPT tune -- huge difference and seemed to even out he car (plus give even more power), before long, it went right back to dropping power in lower gears and at slower speeds. When I saw this part and learned about the drive by wire system (c'mon, Ford, really?!?!?), I knew this part was the answer. Worth every penny. And I'm not so excited about the instant response -- great, love it! But now the car just runs completely smooth even at lower speeds. Completely took the hesitation and uneven run out of this car. LOVE IT. Worth double to me for this reason alone much less the throttle response from start or at higher RPMs. Wouldn't even hesitate to recommend.


      Year: 2013 Submodel: V6

      Helpful (2)

    • 5/5

      February 25, 2017

      Chirp chirp

      Since buying the pedal max i can't imagine riding my pony without it,the response when I hit the gas is right there, even when leaving a parking lot at a store I chirp the tires not even trying to,people who are already checking out my car as I'm leaving just smile when they hear the tires chirp and I leave smiling to


      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      September 11, 2016

      A must have part

      I happened to stumble on this part on a search through AM . At first the price was a bit steep and was it worth it? I pulled the trigger a bought it for my modded 11 Mustang V6 manual. No regrets whatsoever with this purchase. The lag/ delayed pedal response is gone. The car is so much more driveable. Let the clutch out and the momentary rpm drop is gone. Hit the gas and the throttle is instant. Not sure if change is as dramatic on automatics, but if you hate the drive by wire lag, this is the part for you.


      Year: 2011 Submodel: V6

      Helpful (2)

    • 4/5

      September 03, 2016

      2012 Mustang GT

      Great product take it easy at the beginning the horsepower in the torque is unbelievable it all comes in right where it needs to


      Year: 2012 Submodel: GT

      Helpful (2)

    • 5/5

      August 12, 2016

      linear throttle response

      I must admit this device improved the throttle response greatly. Throttle lag has diminished. Definitely recommend this product. John


      Year: 2014 Submodel: GT

      Helpful (2)

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