DiabloSport Modified PCM

2011–2018 Ram 1500 5.7L Hemi 8-Speed

Part #: PCM-DR578S16

Overview

The DiabloSport Modified PCM (Unlocked) is a high-performance engine control module designed specifically for the 2011 through 2018 Ram 1500 equipped with the 5.7L Hemi V8 and 8-speed automatic transmission. This modified PCM unlocks the full tuning potential of your vehicle, allowing you to optimize engine parameters for enhanced power, throttle response, and overall drivability. Ideal for enthusiasts and professional tuners alike, it serves as the foundation for custom tuning using DiabloSport’s advanced programmers.

By replacing your factory PCM with this unlocked version, you gain compatibility with DiabloSport’s Trinity and i3 programmers (sold separately), enabling you to upload custom calibrations tailored to your specific performance goals. This product is perfect for those looking to maximize their Ram 1500’s capabilities beyond stock limitations.

Key Features

The DiabloSport Modified PCM offers a range of benefits that enhance your vehicle’s performance tuning flexibility:

• Unlocked PCM calibration for full tuning access
• Compatible with DiabloSport Trinity and i3 programmers
• Designed specifically for 2011–2018 Ram 1500 5.7L Hemi with 8-speed transmission
• Enables custom tuning for improved horsepower, torque, and throttle response
• Supports advanced engine management adjustments including fuel maps and ignition timing
• Plug-and-play replacement with no permanent modifications to the vehicle’s wiring
• Allows for multiple tune profiles to suit different driving conditions or fuel types
• Manufactured to meet or exceed OEM quality standards

Construction & Design

The DiabloSport Modified PCM is engineered with precision to ensure reliable operation under demanding conditions. Built on a robust hardware platform identical to the factory PCM, it features an unlocked calibration chip that permits extensive reprogramming. The unit is housed in a durable enclosure designed to withstand engine bay temperatures and vibrations, ensuring long-term durability and consistent performance.

Each PCM is carefully modified and tested to guarantee compatibility and seamless integration with your Ram 1500’s existing electrical and engine management systems. This attention to detail ensures that installation is straightforward and that the vehicle maintains all factory safety and operational protocols.

Installation & Fitment

Installation of the DiabloSport Modified PCM is a direct replacement process requiring no vehicle modifications. The PCM is typically located in the engine compartment on the right side of the firewall in the Ram 1500. Before ordering, you will need to provide your current PCM’s Calibration ID to ensure proper matching and programming.

Once installed, the PCM must be programmed using a compatible DiabloSport programmer (sold separately) to upload your desired custom tune. This product is intended for off-road or racing use and is not legal for sale or use on pollution-controlled vehicles.

What's Included

• DiabloSport Modified PCM (Unlocked) for Ram 1500 5.7L Hemi 8-Speed
• Installation instructions and calibration ID guidance

Ideal For

This modified PCM is ideal for Ram 1500 owners who want to unlock the full tuning potential of their 5.7L Hemi engine. It is perfect for performance enthusiasts, professional tuners, and anyone seeking to improve engine output, throttle response, and overall vehicle performance through custom calibration. Whether you are upgrading exhaust, intake, or other performance components, this PCM provides the necessary foundation for advanced tuning.

Emissions Note

This product is not legal for sale or use on pollution-controlled vehicles and is intended for off-road or racing applications only. Please verify local 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.