Ram Truck 6.4L HEMI MoPower Custom Tune with Livernois MyCal Handheld

The Ram Truck 6.4L HEMI found in Ram 2500 and 3500 trucks is built for power and towing — but with a MoPower Calibrations custom tune, it becomes even more capable. Bundled with the Livernois MyCal handheld programmer, this package delivers dyno-proven horsepower and torque gains, improved throttle response, and optimized drivability for work or play.

Dyno-Tested for Real-World Results

Our calibration team refined spark, fueling, airflow, and torque management to maximize output from the 6.4L HEMI while keeping reliability at OEM levels. The result is stronger low-end torque for towing and hauling, sharper throttle response, and more power across the RPM range.

MoPower Ram Truck 6.4L HEMI Tune Features

• Dyno-verified horsepower & torque gains
• Improved throttle response and acceleration
• Enhanced low-end torque for towing & hauling
• Optimized spark and fueling curves
• Modified torque management algorithms
• Refined knock thresholds for safe performance
• Supports bolt-ons such as intake & exhaust

Plug-and-Play with Livernois MyCal

The included Livernois MyCal handheld programmer allows you to flash your Ram’s ECU directly through the OBDII port. No downtime, no mailing in your ECU. Switch between stock and performance tunes with ease.

Fuel Options

This calibration is designed for premium fuel and supports:

• 91 Octane
• 92 Octane
• 93 Octane

⚠️ Running lower octane fuel than your tune requires may result in engine damage. MoPower assumes no liability for incorrect fuel usage.

Important Disclaimer

MoPower Calibrations are sold for off-road use only. All performance Calibrations and Engine Control Units installed are at the customer’s own risk. MoPower Calibrations or www.mo-power.com holds no responsibility either implied or otherwise for mechanical, electrical, or other failure when using any aftermarket performance products from MoPower Calibrations. Items sold for off-road use only are illegal in many states and provinces and are intended for racing vehicles which may never be used on a public road or highway. Not for sale or use in the State of California.

MoPower Calibrations LLC is an independent service provider and is not affiliated with or endorsed by third-party tool manufacturers. Third-party trademarks remain the property of their respective owners.

The MoPower Difference

Maximize the capability of your Ram Truck 6.4L HEMI with a MoPower Custom Tune and the Livernois MyCal handheld. Enjoy more torque for towing, sharper throttle response, and dyno-proven power gains — all delivered safely and reliably.