JMS Accelerator Pedal Boost Module

JMS PedalMAX: Precision Throttle Control for Drive-By-Wire Vehicles

If you've ever pressed the gas pedal on a modern vehicle and noticed a frustrating split-second pause before the engine responds, you've experienced drive-by-wire throttle lag. JMS Chip & Performance engineered their flagship accelerator pedal boost module line — the PedalMAX — specifically to solve this problem. Rather than a mechanical cable, today's electronic throttle control systems route the pedal signal through the ECU before commanding the throttle body, introducing an inherent delay. PedalMAX intercepts and optimizes that signal, delivering a sharper, more immediate throttle response without reflashing or reprogramming the vehicle's ECU.

How the JMS PedalMAX Works

Throttle lag refers to the delay that occurs when you step on the accelerator pedal and the time it takes for the engine to respond. The PedalMAX addresses this by modifying the signal from the accelerator pedal before it reaches the engine, enabling a more immediate response. The result is a driving experience that feels dramatically more connected and confidence-inspiring, whether you're merging onto a highway, towing a load, or pushing the car on a back road.

PedalMAX enhances low- and mid-range horsepower, torque, and overall drivability, making daily driving and performance applications more responsive and enjoyable. It's especially effective at reducing turbo lag and eliminating stalling in manual transmission vehicles, giving you smoother takeoffs and more confident control.

Wide Vehicle Coverage — Ford, GM, Dodge, Jeep & More

JMS offers vehicle-specific PedalMAX SKUs engineered to match the exact accelerator pedal connector and signal characteristics of each platform. Coverage spans a broad range of popular nameplates:

• Ford & Lincoln: Mustang (2011–2023), F-Series trucks, Fusion, Excursion, and EcoBoost-equipped vehicles (part numbers such as PX1114F and PX0510FV3)
• GM: Camaro, Corvette ZR1/ZL1, Cadillac CTS-V, Chevrolet Impala, Equinox, GMC Terrain, Buick Enclave, and more (part numbers such as PX1015GM and PX1415GM)
• Stellantis: Jeep Wrangler, Gladiator, Cherokee, Compass, RAM 1500/TRX, Dodge, and Chrysler Pacifica (part numbers such as PX1920DCX4)

Plug-and-Play Installation & Live-On-The-Fly Adjustment

This plug-and-play module installs in just minutes, with no need for cutting or tuning. Built with a rugged, waterproof design, it's ready for any driving condition. Every kit includes a plug-and-play wiring harness with OEM-style connectors, a remote adjustment knob, and full installation instructions. The device features an adjustable throttle knob, allowing you to fine-tune the sensitivity to suit your driving style, whether you prefer a more aggressive or controlled response.

One standout advantage of the PedalMAX is its compatibility with existing performance hardware. 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. That stackability makes it a natural first upgrade or a complementary addition to a broader performance build.

Built and Backed in the USA

Each PedalMAX kit is designed and assembled in the U.S.A. JMS warrants to the original purchaser that their product will be free from defects in materials and workmanship for a period of three years from the original purchase date. That combination of domestic engineering and a strong warranty makes the PedalMAX one of the most trusted throttle enhancement solutions on the market today.

Browse the full selection of JMS accelerator pedal boost modules to find the right PedalMAX for your specific year, make, and model — and explore the complete JMS Chip & Performance brand page for their broader lineup of electronic performance products.