Description
Overview
The DiabloSport inTune i3 Platinum + Unlocked PCM Kit is a computer chip programmer built specifically for the 2021 Ram 1500 equipped with the 5.7L HEMI gasoline engine. Designed for owners who want more than a factory calibration can deliver, this kit combines DiabloSport’s flagship i3 Platinum handheld tuner with an unlocked PCM so you can unleash real horsepower gains, disable MDS cylinder deactivation, and sharpen overall drivability. It’s the ultimate performance upgrade for enthusiasts who want their truck to respond the way it should.
Key Benefits
At the heart of the system is the vibrant color touch screen display, making it easy to load performance tunes, monitor vehicle data, and navigate menus without guesswork. Built-in performance tuning wakes up the 5.7L HEMI, while MDS disable keeps all eight cylinders working for a more consistent, engaging driving experience. Because this is an unlocked PCM kit, you’re not limited to canned files — the i3 Platinum accepts custom tunes from CMR, giving you the freedom to dial in a calibration tailored to your build.
For those who like to fine-tune and verify their results, the i3 Platinum features 5-volt data logging inputs, letting you capture real-world data to refine your setup. Wi-Fi updates keep the device current with the latest software directly over your network, so you always have access to the newest features and support. A built-in speedometer calibration function rounds out the package for owners running different tire sizes or gearing.
Highlights
- Color touch screen display for intuitive, at-a-glance tuning and navigation
- Custom tuning capability that accepts custom tunes from CMR
- Performance tunes engineered for the 2021 Ram 1500 5.7L HEMI
- MDS disable for full-time eight-cylinder operation and sharper drivability
- 5-volt data logging inputs for capturing and refining real-world data
- Wi-Fi updates to keep the device software current
- Speedometer calibration for corrected readings
Fitment
This kit is application-specific to the 2021 Ram 1500 powered by the 5.7L HEMI running on gasoline. The unlocked PCM is matched to your vehicle so the i3 Platinum can deliver its performance tuning and custom tune flexibility right out of the box.
Important Compliance Notes
This product is intended for off-road and performance use. It is not 50-state legal and is not CARB (California) compliant, and it carries a California Proposition 65 warning. Please review your local regulations before installation. Note that this configuration does not include in-cab monitoring, video capability, or an AC adapter.
If you’re serious about getting the most from your HEMI, the inTune i3 Platinum + Unlocked PCM Kit gives you the hardware and the flexibility to program, log, and refine your 2021 Ram 1500 exactly how you want it.











