DiabloSport Modified PCM

2011–2018 Ram 1500 5.7L Hemi 8-Speed

Part #: PCM-DR578S18

Overview

The DiabloSport Modified PCM (Unlocked) is a high-performance engine control module designed specifically for 2011 through 2018 Ram 1500 trucks equipped with the 5.7L Hemi V8 and 8-speed automatic transmission. This modified PCM unlocks the full tuning potential of your vehicle’s factory powertrain management system, allowing for enhanced performance customization when paired with a compatible DiabloSport programmer such as the Trinity or i3 (programmer sold separately).

Ideal for enthusiasts seeking to optimize engine output, throttle response, and overall drivability, this unlocked PCM serves as the foundation for advanced tuning and calibration. It replaces your stock PCM with a version that is ready to accept custom calibrations and performance maps, enabling you to tailor your Ram 1500’s performance to your specific driving needs and preferences.

Key Features

This DiabloSport Modified PCM offers a range of features that make it a valuable upgrade for Ram 1500 owners looking to maximize their truck’s potential:

• Unlocked calibration for full tuning flexibility with DiabloSport programmers
• Compatible with 2011–2018 Ram 1500 models equipped with 5.7L Hemi engines and 8-speed transmissions
• Supports custom performance maps for improved horsepower, torque, and throttle response
• Enables advanced diagnostic and tuning capabilities not available with stock PCM
• Plug-and-play replacement designed to fit factory PCM locations without modification
• Allows for safe and reversible tuning without permanent changes to the vehicle’s original ECU
• Supports a wide range of aftermarket performance upgrades and modifications

Construction & Design

The DiabloSport Modified PCM is engineered to meet or exceed OEM quality standards, ensuring reliable operation under demanding conditions. Built with robust electronic components and precision programming, this PCM maintains the durability and longevity expected from factory engine control modules while providing the flexibility needed for performance tuning.

Its design allows for seamless integration with the vehicle’s existing wiring harness and sensors, preserving all factory functions and safety features. The unit is housed in a rugged enclosure designed to withstand engine bay temperatures and vibrations, ensuring consistent performance over time.

Installation & Fitment

Installation of the DiabloSport Modified PCM is straightforward and requires no permanent modifications to your Ram 1500. The PCM is a direct replacement for the factory unit and mounts in the original location, typically found in the engine compartment on the right side of the firewall. Before ordering, you will need to provide your current PCM’s Calibration ID# to ensure compatibility.

Once installed, the modified PCM must be programmed using a compatible DiabloSport programmer (sold separately) to load your desired performance calibrations. This process is user-friendly and supported by DiabloSport’s tuning software and customer resources.

What's Included

• DiabloSport Modified PCM (Unlocked) for Ram 1500 5.7L Hemi 8-Speed

Ideal For

This modified PCM is perfect for Ram 1500 owners who want to unlock the full tuning potential of their 5.7L Hemi engine. It is especially suited for enthusiasts who plan to use DiabloSport tuning devices to customize engine parameters, improve performance, or accommodate aftermarket modifications such as cold air intakes, exhaust systems, or superchargers.

Whether you are a weekend warrior, a performance enthusiast, or a professional tuner, this PCM provides the essential foundation for advanced engine management and optimization.

Emissions Note

This product is not available for sale or use on pollution-controlled vehicles. It is intended for off-road or racing applications only and may not comply with emissions regulations in certain regions. Please verify local laws and regulations before installation.

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.