JMS PedalMAX and PedalMAX Terrain are plug-and-play upgrades that transform how your Ram 1500 feels — on pavement or on the trail.
PEDALMAX THROTTLE RESPONSE CONTROLLER
The original throttle response controller. JMS introduced this product category, setting the standard for pedal signal optimization without ECU modification.
Fix factory throttle lag in your Ram 1500 in minutes.
Modern Ram 1500 trucks use drive-by-wire throttle mapping that softens or delays pedal response. PedalMAX recalibrates the pedal signal to deliver a direct, immediate throttle feel.
PedalMAX installs inline with the Ram 1500 accelerator pedal sensor and modifies the output signal in real time.
No apps. No Bluetooth. No external devices. All adjustments are made directly on the unit.
FACTORY THROTTLE
WITH PEDALMAX
PedalMAX operates independently of ECU calibration and stacks on top of custom or canned tunes.
Plug-and-play, vehicle-specific harness
Typical install: under 15 minutes
No tools required (most models)
Most PedalMAX models are EO (Executive Order) emissions compliant. Verify EO status for your specific model year and engine.
Owners frustrated with throttle lag
Drivers who tow & need low-speed control
Daily drivers wanting predictable response
No tools. No tuning. Just plug in PedalMAX and feel the difference instantly.
PedalMAX improves the fun factor of your vehicle. User adjustable — “Live-On-The-Fly” with the included control knob.
Throttle response when loaded matters most.
Dial in response for empty vs. loaded runs.
Safe for stock and modified trucks.
Sharper throttle mapping means quicker transmission response for more aggressive downshifts.
No ECU modifications. Factory & aftermarket tuning compatible. Emissions legal.
Waterproof, durable design. Built and assembled right here in the United States.
Bottom Line
No. PedalMAX only modifies the electronic signal between your accelerator pedal and the throttle body. It does not alter your ECU, engine calibration, or any factory hardware. It’s fully reversible — unplug it and your vehicle returns to 100% stock.
Yes. PedalMAX works alongside any aftermarket tune or programmer. It operates independently of the ECU calibration, so there are no conflicts regardless of what tune you’re running.
Completely. PedalMAX plugs in between the factory connectors. Unplug it and reconnect the stock harness — takes about 2 minutes. No trace left behind.
PedalMAX controller unit, vehicle-specific wiring harness (pre-terminated — no cutting or splicing), adjustment dial, mounting hardware, and quick-start installation guide.
PedalMAX is tuned for street and daily driving. PedalMAX Terrain is optimized for 4WD mode, crawl control, and off-road throttle response on trail and dirt.
