Dusterhoff Racing DT937 TRX Flex Fuel Power Package

The Dusterhoff Racing DT937 TRX Flex Fuel Power Package is the ultimate remote tuning solution for 2021-2024 Ram 1500 TRX owners looking to maximize the performance of their factory supercharged 6.2L Gen 3 HEMI Hellcat engine while gaining the flexibility to run either 91/93 octane pump gas or E85 ethanol fuel. Designed using years of Gen 3 HEMI development and real-world testing, the DT937 package combines proven hardware upgrades with Dusterhoff Racing’s custom flex fuel calibration to produce approximately 100-150 wheel horsepower over stock, depending on fuel quality and operating conditions. Rather than purchasing individual upgrades and hoping they work together, this package provides a complete, professionally engineered solution that delivers outstanding horsepower, drivability, and long-term reliability. Whether your TRX is used as a daily driver, tow vehicle, weekend toy, off-road machine, or drag strip performer, the DT937 package transforms every aspect of the driving experience.

At the center of the DT937 package is the Dusterhoff Tuning Upper Pulley Kit, which increases supercharger speed to safely generate additional boost throughout the RPM range. Supporting the added airflow are high-flow fuel injectors, providing the additional fuel volume necessary to support higher horsepower levels on both premium pump gas and E85. A heavy-duty supercharger belt ensures dependable belt grip under increased boost, while the included 180-degree thermostat helps maintain lower engine operating temperatures for more consistent performance. Every package also includes PCM Unlock Service, HP Tuners RTD with Credits, and a Smart Access Cable, allowing Dusterhoff Racing to remotely deliver custom engine and transmission calibrations specifically optimized for both gasoline and ethanol operation.

What Comes in the DT937 TRX Flex Fuel Power Package

Dusterhoff Tuning Upper Pulley Kit
High-Flow Fuel Injectors
Heavy-Duty Supercharger Belt
180° Performance Thermostat
PCM Unlock Service
HP Tuners RTD with Credits
Smart Access Cable
Dusterhoff Racing Custom Flex Fuel Engine Tune
Dusterhoff Racing Custom Transmission Tune
DT Serialized Plaque

This package makes around 100hp over stock on 91/93 pump gas or around 150hp over stock on E85.

*THIS PACKAGE INCLUDES PARTS AND REMOTE TUNING FOR E-85 & 91/93 FUELING

*INSTALLATION IS ADDITIONAL

*UNLOCKING TRX PCM RESULTS IN SUSPENSION HEIGHT NEEDING TO BE RECALIBRATED/RELEARNED. DEALER SOFTWARE NEEDED.

One of the biggest advantages of the DT937 package is its Flex Fuel capability. Owners can enjoy reliable performance on premium pump gas during everyday driving, then switch to E85 when available to unlock substantially greater horsepower and torque without changing calibrations. Dusterhoff Racing’s custom tuning optimizes ignition timing, fueling, throttle response, boost management, torque management, and transmission behavior for each fuel type, allowing the truck to take full advantage of ethanol’s higher octane while maintaining smooth street manners and dependable reliability. Drivers will notice dramatically improved throttle response, harder acceleration, stronger mid-range torque, and significantly increased top-end power whether cruising around town or making full-throttle passes.

The DT937 package is also an excellent stepping stone for future performance upgrades. The upgraded fueling system and optimized calibration support additional modifications, including larger throttle bodies, upgraded superchargers, heat exchangers, long tube headers, camshafts, and other airflow improvements. Built around proven Dusterhoff Racing Gen 3 HEMI tuning strategies, this package provides an ideal balance of power, reliability, and flexibility for serious TRX enthusiasts. Please note: This package includes parts and remote tuning for both E85 and 91/93 octane pump gas, installation is not included, and unlocking the factory TRX PCM requires the suspension height to be recalibrated using dealer-level software after installation. For more complete performance solutions, browse our TRX Power Packages category to continue building your supercharged Gen 3 HEMI platform.

Specifications & Features
Manufacturer: Dusterhoff Racing
Product Name: DT937 TRX Flex Fuel Power Package
Product Type: Flex Fuel Performance Upgrade Package
Engine Compatibility: 6.2L Supercharged Gen 3 HEMI V8
Supercharger Compatibility: Factory IHI Supercharger
Vehicle Compatibility: 2021-2024 Ram 1500 TRX
Year Compatibility: 2021-2024
Estimated Power Gain: Approximately 100-150 Wheel Horsepower Over Stock
Fuel Compatibility: 91/93 Octane Premium Pump Gas & E85 Ethanol
Flex Fuel Tuning Included
Includes Parts and Remote Tuning
Installation: Professional Installation Recommended (Installation Not Included)
Included Components
Dusterhoff Tuning Upper Pulley Kit
High-Flow Fuel Injectors
Heavy-Duty Supercharger Belt
180° Performance Thermostat
PCM Unlock Service
HP Tuners RTD with Credits
Smart Access Cable
Dusterhoff Racing Custom Flex Fuel Engine Tune
Dusterhoff Racing Custom Transmission Tune
DT Serialized Plaque
Performance Features
Flex Fuel Capability
Increased Supercharger Boost
Upgraded Fuel System Capacity
Improved Horsepower & Torque
Enhanced Throttle Response
Increased Mid-Range Torque
Increased Top-End Horsepower
Optimized Engine Calibration
Optimized Transmission Calibration
Improved Cooling Performance
Excellent Street Drivability
Supports Future Performance Upgrades
Intended Use
Daily Driving
Street Performance
Towing
Off-Road Performance
Roll Racing
Drag Racing
Installation & Notes
Professional Installation Recommended
PCM Unlock Service Included
Remote Tuning Included
Compatible with Premium Pump Gas and E85
Suspension Height Relearn Required After PCM Unlock
Dealer-Level Software Required for Suspension Calibration
Weight: Varies by Included Components
Dimensions: Vary by Included Components
Color: Components Vary by Manufacturer
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