Description
DiabloSport Modified PCM
2011–2021 Jeep Grand Cherokee 5.7L Hemi & 6.4L SRT
Part #: PCM-JGCV817
The DiabloSport Modified PCM (Unlocked) is a high-performance engine control module designed specifically for Jeep Grand Cherokee models equipped with the 5.7L Hemi and 6.4L SRT engines from 2011 through 2021. This modified PCM unlocks your vehicle’s full potential by allowing compatibility with DiabloSport’s advanced tuning programmers such as the Trinity and i3 (programmers sold separately). It is ideal for enthusiasts looking to optimize engine performance, improve throttle response, and customize tuning parameters beyond factory limitations.
By replacing your factory PCM with this unlocked version, you gain the flexibility to tailor your vehicle’s engine management to your driving style and performance goals. Whether you want to enhance power output, improve fuel efficiency, or adjust transmission shift points, the DiabloSport Modified PCM provides the foundation for comprehensive tuning capabilities.
Key Features
This modified PCM offers a range of features that empower you to maximize your Jeep Grand Cherokee’s performance:
- Unlocked calibration for full tuning flexibility with DiabloSport programmers
- Compatible with 5.7L Hemi and 6.4L SRT engines from 2011 to 2021
- Supports advanced tuning adjustments including fuel maps, ignition timing, and transmission settings
- Enables improved throttle response and optimized engine performance
- Allows for custom tuning to suit various modifications and aftermarket upgrades
- Direct replacement for factory PCM with plug-and-play installation
- Designed to work seamlessly with DiabloSport’s Trinity and i3 programmers (sold separately)
- Helps unlock hidden performance potential without the need for extensive hardware changes
Construction & Design
The DiabloSport Modified PCM is engineered to meet or exceed OEM quality standards, ensuring reliable operation under demanding conditions. Built with robust internal components and precision programming, this PCM maintains the durability and longevity expected from a factory-grade engine control module. Its design allows for straightforward installation without compromising vehicle electronics or safety systems.
Each unit is carefully modified and tested to guarantee compatibility with the specified Jeep Grand Cherokee models and engines, providing a seamless integration with your vehicle’s existing wiring and sensors.
Installation & Fitment
Installation of the DiabloSport Modified PCM is a direct swap with your vehicle’s original PCM. The PCM is typically located on the passenger side under the hood, adjacent to the fuse box in the Jeep Grand Cherokee. Before ordering, you will need to provide your current PCM’s Calibration ID number to ensure proper matching and compatibility.
No permanent modifications to your vehicle’s wiring or hardware are required, making the installation process straightforward for professional technicians or experienced enthusiasts. After installation, the PCM can be programmed using a compatible DiabloSport programmer to customize your vehicle’s performance settings.
What’s Included
- DiabloSport Modified PCM (Unlocked) for Jeep Grand Cherokee 5.7L Hemi & 6.4L SRT
Ideal For
This product is perfect for Jeep Grand Cherokee owners who want to unlock advanced tuning capabilities and maximize their vehicle’s performance potential. It is especially suited for enthusiasts who have installed aftermarket performance parts or who desire greater control over engine and transmission parameters. Whether you are a tuner, racer, or daily driver seeking enhanced responsiveness and power, the DiabloSport Modified PCM provides a solid foundation for custom tuning.
Emissions Note
This product is not available for sale or use on pollution-controlled vehicles. Please verify local regulations before installation and use.






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