DiabloSport Modified PCM

2011–2018 Ram 1500 5.7L Hemi 8-Speed

Part #: PCM-DR578S17

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 transmission. This modified PCM unlocks the full tuning potential of your vehicle by allowing compatibility with DiabloSport’s advanced tuning programmers such as the Trinity and i2 (programmer sold separately). Ideal for enthusiasts seeking to optimize engine performance, improve throttle response, and customize calibration settings, this PCM serves as the foundation for a tailored driving experience.

By replacing your factory PCM with this unlocked version, you gain the flexibility to upload custom tunes that enhance power delivery, fuel efficiency, and drivability. This product is intended for off-road or racing use and is not legal for sale or use on pollution-controlled vehicles.

Key Features

The DiabloSport Modified PCM offers a range of features that empower you to maximize your Ram 1500’s performance potential:

• Unlocked calibration allowing custom tuning with DiabloSport programmers
• Compatible with 2011–2018 Ram 1500 models equipped with 5.7L Hemi and 8-speed automatic transmission
• Enables advanced adjustments to fuel maps, ignition timing, and transmission shift points
• Supports enhanced throttle response and optimized power delivery
• Plug-and-play replacement for factory PCM with no permanent vehicle modifications required
• Allows for multiple tune profiles to suit different driving conditions or performance goals
• Durable construction designed to withstand engine bay conditions
• Facilitates diagnostics and monitoring through compatible DiabloSport devices

Construction & Design

The DiabloSport Modified PCM is engineered with high-quality electronic components housed in a rugged enclosure designed to endure the harsh environment of the engine compartment. The unit is carefully calibrated and modified to maintain reliability while providing the flexibility needed for custom tuning. Its design ensures seamless integration with the Ram 1500’s existing wiring harness and sensors, preserving factory functionality while unlocking new performance capabilities.

Installation & Fitment

Installation involves replacing the factory PCM with the DiabloSport Modified PCM, typically located in the engine compartment on the right side of the firewall in Ram 1500 models. Before ordering, you will need to provide your current PCM’s Calibration ID to ensure proper matching. Installation is straightforward for those familiar with automotive electronics and requires no permanent modifications to the vehicle. After installation, the PCM must be programmed using a compatible DiabloSport tuner (sold separately) to upload custom calibrations.

What's Included

• DiabloSport Modified PCM (Unlocked) unit

Ideal For

This modified PCM is ideal for Ram 1500 owners who want to unlock the full tuning potential of their 5.7L Hemi equipped trucks. It is perfect for performance enthusiasts, tuners, and racers looking to customize engine and transmission parameters for improved power, efficiency, and drivability. It is also suitable for those who plan to use DiabloSport’s advanced tuning devices to create or load custom calibrations tailored to their specific needs.

Emissions Note

This product is not legal for sale or use on pollution-controlled vehicles and should only be used in off-road or racing applications where emissions compliance is not required.

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.