Chrysler 300 5.7L HEMI MoPower Custom Tune with Livernois MyCal Handheld

Unleash the full potential of your Chrysler 300 5.7L HEMI with MoPower Calibrations’ custom performance tune, bundled with the Livernois MyCal handheld programmer. This package delivers dyno-proven horsepower and torque gains, sharper throttle response, and optimized drivability — all without sending in your ECU.

Dyno-Proven HEMI Gains

Through extensive dyno sessions and datalogging, our engineers developed a performance calibration that maximizes the 5.7L HEMI’s output while preserving OEM reliability. Expect significant improvements in low-end torque, midrange pull, and wide-open-throttle performance.

MoPower Chrysler 300 5.7L HEMI Tune Features

• Sharper throttle response and acceleration
• Increased horsepower and torque across the curve
• Optimized fuel and spark mapping
• Modified torque management algorithms
• Refined knock thresholds for safe, consistent power
• Improved wide-open-throttle performance
• Potential gains in fuel economy during normal driving

Plug-and-Play with Livernois MyCal

The included Livernois MyCal handheld programmer lets you flash your Chrysler 300 directly through the OBDII port. No downtime, no mailing in your ECU. Switch between stock and performance tunes at any time.

Fuel Options

Our Chrysler 300 5.7L HEMI tunes are designed for premium fuel and support:

• 91 Octane
• 92 Octane
• 93 Octane

⚠️ Running fuel lower than your selected tune may cause engine damage. MoPower assumes no liability for incorrect fuel usage.

Give your Chrysler 300 5.7L HEMI the power and responsiveness it deserves with a MoPower Custom Tune and the convenience of the Livernois MyCal handheld. Order today and experience the MoPower difference.

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.