DiabloSport Modified PCM

2019–2026 Ram 2500 / 3500 6.4L Hemi

Part #: PCM-DR6419

Overview

The DiabloSport Modified PCM (Unlocked) is a high-performance engine control module designed specifically for 2019 through 2026 Ram 2500 and 3500 trucks equipped with the 6.4L Hemi V8 engine. This modified PCM unlocks the full tuning potential of your vehicle’s powertrain, allowing you to optimize performance, efficiency, and drivability beyond factory limitations. Ideal for enthusiasts and professional tuners alike, it provides a foundation for custom tuning using compatible DiabloSport programmers.

By replacing your factory PCM with this unlocked version, you gain the flexibility to tailor engine parameters such as fuel delivery, ignition timing, and throttle response to suit your driving style and modifications. This product is perfect for those looking to maximize horsepower and torque while maintaining reliability and smooth operation.

Key Features

The DiabloSport Modified PCM offers advanced tuning capabilities and compatibility with DiabloSport’s line of programmers, enabling precise control over your Ram’s engine management system. Key features include:

• Unlocked PCM calibration for custom tuning on 2019–2026 Ram 2500 and 3500 with 6.4L Hemi engines
• Compatible with DiabloSport Trinity and i3 programmers (programmers sold separately)
• Enables adjustments to fuel maps, ignition timing, and other critical engine parameters
• Supports performance upgrades such as exhaust, intake, and forced induction modifications
• Maintains factory-level drivability and reliability when properly tuned
• Direct replacement for the factory PCM with no permanent vehicle modifications required
• Allows for multiple tune profiles to optimize for different driving conditions or fuel types
• Designed specifically for heavy-duty Ram trucks, ensuring robust performance under load

Construction & Design

The DiabloSport Modified PCM is engineered to meet or exceed OEM standards for durability and reliability. Built with high-quality electronic components and robust firmware, it withstands the demanding conditions of heavy-duty truck operation. The unit is designed for seamless integration with your Ram’s existing wiring harness and sensors, ensuring a plug-and-play installation experience without compromising factory safety features.

Its unlocked calibration is carefully crafted to provide a stable platform for custom tuning, allowing professional tuners to safely extract additional performance while protecting engine components.

Installation & Fitment

Installation of the DiabloSport Modified PCM is straightforward and requires no permanent modifications to your vehicle. The PCM is a direct replacement for the factory unit and is typically located in the engine compartment or under the passenger floorboard, depending on your specific model. Before ordering, you will need to provide your current PCM Calibration ID to ensure compatibility.

Once installed, the modified PCM must be programmed using a compatible DiabloSport programmer such as the Trinity or i3 (sold separately) to load custom tunes tailored to your vehicle and performance goals.

What's Included

• DiabloSport Modified PCM (Unlocked) for 2019–2026 Ram 2500 / 3500 6.4L Hemi

Ideal For

This modified PCM is ideal for Ram 2500 and 3500 owners who want to unlock the full potential of their 6.4L Hemi engines. It is especially suited for enthusiasts who have made or plan to make performance upgrades such as aftermarket exhausts, intakes, or forced induction systems. Professional tuners and performance shops will also find this PCM essential for delivering custom calibration solutions that enhance power, torque, and throttle response while maintaining drivability and engine safety.

Emissions Note

Not available for sale or use on pollution-controlled vehicles. This product is intended for off-road or racing applications only and may not comply with local emissions regulations.

DiabloSport makes handheld tuners and ECU tuning solutions aimed at unlocking additional performance and improving drivability for many late-model domestic trucks and muscle cars. Their devices and supported tuning ecosystem are commonly used to optimize engine and transmission calibrations after mods like intakes, exhaust, or gearing changes.