JMS Automotive Performance Parts

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    • (0 reviews)
      # sp29654
      FuelMAX Fuel Pump Voltage Booster by JMS®. This product is made of high-quality materials to serve you for years to come. Designed usig state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      High quality at an affordable priceExpertly made from premium materials
      $409.00 - $599.00
    • (3 reviews)
      # sp29659
      PedalMAX Throttle Delay Eliminator by JMS®. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $289.00 - $319.00
    • (3 reviews)
      # sp29658
      Pedalmax Drive By Wire Throttle Modification Device by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Simple Plug & Play Installation: Unplug your stock pedal connector and connect JMS PedalMAXImproves vehicle acceleration
      $289.00 - $389.00
    • (1 review)
      # sp29650
      Boostmax Ecoboost Performance Booster by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to...
      Plug and playInstalls in minutes
      $309.00 - $389.00
    • (0 reviews)
      # sp29649
      MAF Wiring Extension/Adaptor Harness by JMS®. This JMS LS2 Harness to MAF Plug and Play MAF Extension harness can be used to extend or relocate your vehicles MAF up to 36 inches away from its stock location.
      Plug and Play DesignNo cutting or Splicing
      $59.00
    • (0 reviews)
      # sp95954
      Digital Mass Air Modifier by JMS®. The JMS Mass Air Modifier is the ONLY device capable of filtering AND scaling the mass air signal in your car. By filtering the mass air signal in your vehicle, the idling and cruising performance of...
      Easy to Set-Up and UseFully Adjustable without the Need for a Computer
      $429.00 - $449.00
    • (0 reviews)
      # sp95952
      Analog Mass Air Modifier by JMS®. The JMS Mass Air Modifier is the ONLY device capable of filtering AND scaling the mass air signal in your car. By filtering the mass air signal in your vehicle, the idling and cruising performance of...
      Easy to Set-Up and UseFully Adjustable without the Need for a Computer
      $429.00
    • (0 reviews)
      # sp136339
      Ignition Amplifier by JMS®. This top-notch product ensures efficient supplying of power to burn the fuel in each individual cylinder. Painstakingly built to perfection it delivers astounding performance to help you get the most out of...
      Designed to boost your vehicle's performanceMade to meet rigorous quality standards
      $419.00
    • (0 reviews)
      # sp112850
      FuelMAX V2 Fuel Pump Voltage Booster by JMS®. Use PowerMAX v2 to quickly and easily increase your stock fuel pumps output! PowerMAX Version 2 upgrades include: New Case, Higher Output & More Features! PM-2000 boost & regulates voltage...
      Simple installation: PowerMAX plugs directly into your existing fuel pump driver +12V DC feed wireCompatible with all 12V or 16V battery systems
      $399.00 - $689.00
    • (0 reviews)
      # sp112851
      Nitrous Controller by JMS®. The JMS Progressive N20 Controller is the new standard for Nitrous Controllers! Finally, there is a N20 Controller that allows for maximum ADJUSTABILITY while combining all of the popular nitrous add-ons into...
      Easy to setup and use. No relays, triggers, or RPM switches required, everything is built into one unit!Compatible with all 12V or 16V battery systems & one to sixteen cylinder engines.
      $399.00
    • (0 reviews)
      # sp95956
      MAF Sensor Wiring Extension by JMS®. Need to relocate your Slot style MAF to another location and do not want to cut your factory wires? Simply use this JMS Slot MAF extension harness to move the MAF up to 3 feet away. This harness uses...
      Uses the same Delphi/Packard connector, terminals, and seals as the factory wiring harnessAssembled using the factory correct cross linked polyethelene high temperature TXL wire in the proper gauge
      $49.00
    • (0 reviews)
      # sp95957
      MAF Sensor Wiring Pigtail by JMS®. This JMS LS3 and LS7 MAF Pigtail can be used to convert your LS2 or LS1 vehicle to use a LS3 and LS7 MAF Sensor. or replace a worn or modified LS3 and LS7 MAF connector.
      LS3/LS7 Vehicle Replacement MAF PlugLS1/LS2 Vehicle Upgrade MAF Plug
      $30.00
    • (0 reviews)
      # mpn4478775040
      LaunchMAX Trans Brake Kit by JMS®. Fastest Trans-Brake Release (All Digital product....no moving parts or relays to fail). Waterproof, simple, splice in design. Choose either: Ground or +12v activation. Does not include a momentary...
      Simple, splice-in DIY designThis kit is not designed to raise the line pressure in the transmission
      $209.00
    • (0 reviews)
      # mpn2363250923
      Rear Sway Bar Relocation Bracket Kit by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $39.99
    • (0 reviews)
      # mpn2363250899
      Oxygen Sensor Extension Harness by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $52.00
    • (0 reviews)
      # mpn2363250914
      Ignition System Voltage Booster by JMS®. PowerMAX Voltage Booster-Regulator will increase the output of any fuel pump or ignition system. The PowerMAX unit has been designed to be mounted inside the vehicle cabin (under a seat)or in the...
      Coil-On-Plug Ignition System BoosterSingle Coil Booster
      $489.00
    • (0 reviews)
      # mpn2363250915
      Remote Voltage Adjustment Knob by JMS®. PowerMAX Voltage Booster-Regulator will increase the output of any fuel pump or ignition system. The PowerMAX unit has been designed to be mounted inside the vehicle cabin (under a seat) or in the...
      Double the output of your ignition systemEliminate spark-blow-out and run a wider gap on your spark-plug
      $49.00
    • (0 reviews)
      # mpn4510810320
      BoostMAX Ecoboost Performance Booster by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to...
      Plug and playInstalls in minutes
      $309.00
    • (0 reviews)
      # sp95955
      MAF Sensor Adapter by JMS®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a...
      No Splicing requiredPlug & Play designUses OEM-style connectors
      $59.00
    • (0 reviews)
      # mpn2363250878
      ThrottleMAX Single Remote Adjustment Knob by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $49.00
    • (0 reviews)
      # mpn4524453568
      Diesel Pump Mounted Driver by JMS®. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet or...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $329.00
    • (0 reviews)
      # mpn4524452994
      PowerMAX V2 Plug and Play Fuel Pump Voltage Booster by JMS®. Activation - MAF/MAP/TPS or Ground. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $499.00
    • (0 reviews)
      # mpn4524452320
      PowerMAX V2 Fuel Pump Voltage Booster by JMS®. Activation - MAF/MAP/TPS or Ground. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $409.00
    • (0 reviews)
      # mpn4524452758
      PowerMAX V2 Plug and Play Fuel Pump Voltage Booster by JMS®. Activation - MAF/MAP/TPS or Ground. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $599.00
    • (0 reviews)
      # mpn4511701028
      PedalMAX Drive By Wire Throttle Modification Device by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Simple Plug & Play Installation: Unplug your stock pedal connector and connect JMS PedalMAXImproves vehicle acceleration
      $319.00
    • (0 reviews)
      # mpn4511701404
      PedalMAX Drive By Wire Throttle Modification Device by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Simple Plug & Play Installation: Unplug your stock pedal connector and connect JMS PedalMAXImproves vehicle acceleration
      $319.00
    • (0 reviews)
      # mpn4511701224
      PedalMAX Drive By Wire Throttle Modification Device by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Simple Plug & Play Installation: Unplug your stock pedal connector and connect JMS PedalMAXImproves vehicle acceleration
      $319.00
    • (0 reviews)
      # mpn4511700796
      PedalMAX Drive By Wire Throttle Modification Device by JMS®. Designed utilizing the latest technology, this product by JMS features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is...
      Simple Plug & Play Installation: Unplug your stock pedal connector and connect JMS PedalMAXImproves vehicle acceleration
      $319.00
    • (0 reviews)
      # mpn2363250893
      PowerMAX 70 Amps 12V Fuel Pump Wiring Upgrade Kit by JMS®. JMS universal 70 amp 12V fuel pump wiring upgrade kit. This kit can be used to bypass your vehicles factory wiring when the demand for more amperage is needed.
      21 Ft Long 12V Battery Lead3 Ft 12V Output Lead
      $129.00
    • (0 reviews)
      # mpn2363250901
      JMS Nitruos Controller by JMS®. The JMS Progressive N20 Controller is the new standard for Nitrous Controllers! Finally, there is a N20 Controller that allows for maximum ADJUSTABILITY while combining all of the popular nitrous add-ons...
      Easy to setup and use. No relays, triggers, or RPM switches required, everything is built into one unit!Compatible with all 12V or 16V battery systems & one to sixteen cylinder engines
      $399.00




    Established in 1993, JMS is a prominent manufacturer of automotive electronic components located in Lucedale, Mississippi. For over 20 years already, the company has been developing quality products that improve vehicle performance, designed specifically for various automotive applications. Today, JMS is an industry leader in automotive electronics, supercharging, turbocharging, nitrous oxide injection, and custom EFI tuning.

    JMS has a 60-year experience in automotive, powersports, and professional racing markets. At JMS, there’s a group of experts specializing in GM, Ford, and Dodge drivetrain and powertrain calibration engineering, car assembly, and aftermarket performance parts engineering and production. Specialization on specific vehicle’s features provides excellent understanding of what customers need for their application.

    JMS Automotive is proud of leading the industry, providing both excellent knowledge of the segment and outstanding, high-technology manufacture. All of the company’s employees are skilled technicians, excellent designers and engineers, who are aware of the latest updates in the automotive world. Their production facilities provide precise manufacture and continuous control of JMS auto parts, helping to eliminate the possibilities of failures and defects. Three in-house chassis dynos help to measure horsepower gains.

    JMS Reviews

    Average rating:  5  4.9 - 7 reviews
    4.5 of 5
    Worth Every Penny with Knob
    Easy install, big notice when knob is turned up to 100 in my 6.2 Denali for no hp gains, it sure gives it that pep we all are looking for. Must buy for daily truck drivers.
    JPosted by Joe (Austin, TX) / June 5, 20182014 GMC Sierra Denali
    Was this review helpful for you? Yes
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