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5 Star Custom Tunes w/ RTD Device (2018 - 2023 Mustang 5.0L)

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Item#:
5star-1823mustanggt-rtd
Regular price: $599.99
Sale price: $539.99
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5 Star Custom Tunes w/ RTD Device (2018 - 2023 Mustang 5.0L)

Unlock the full potential of your 2018-2023 Ford Mustang 5.0L with a 5 Star Custom Tune and RTD device. From the factory, your Mustang’s PCM is calibrated for average drivers, leaving horsepower, torque, and drivability untapped. With precision recalibration from 5 Star, you’ll gain maximum horsepower, faster throttle response, optimized shift points, improved fuel efficiency, and an exhilarating driving experience.

Why Choose 5 Star Tuning?

5 Star Tuning is the leader in Ford and GM performance calibration, providing custom tunes that are tailored to your exact driving needs. Unlike generic “one-size-fits-all” solutions, our tunes are designed to deliver more horsepower, torque, and drivability—all without compromising your vehicle’s reliability.

Dyno & Street Proven Performance

Each tune is dyno-developed, tested, and refined across a million test miles. We’ve validated our calibrations under real-world driving, track runs, and towing conditions to ensure your Mustang receives safe, consistent, and proven performance gains.

Free Tunes for Life

As part of the Tunes for Life program, your custom calibration updates are free for as long as you own your Mustang. Add new mods such as intakes, exhaust systems, or throttle bodies and we’ll update your tune at no extra cost—ensuring peak performance every step of the way.

Performance Benefits

  • Significant horsepower & torque gains
  • Sharper throttle response
  • Optimized transmission shifts
  • Improved drivability and acceleration
  • Removal of the factory speed limiter
  • Enhanced efficiency with added performance

How We Extract More Power

Our custom calibrations adjust fuel mapping, ignition timing, drive-by-wire response, torque converter control, and transmission shift strategies. These refinements unleash your Mustang’s hidden potential while keeping drivability smooth and reliable.

What the RTD Device Can Do

The HP Tuners RTD is more than a flash programmer—it’s a versatile performance tool. With it, you can:

  • Store and manage up to 10 custom 5 Star Tunes
  • Monitor live engine parameters (RPM, speed, coolant temps, and more)
  • Datalog your Mustang for further refinement
  • Revert to your saved stock tune at any time

Installation Process with RTD Flasher

Using the HP Tuners RTD Flasher software (Windows PC required), installing your tune is simple:

  1. Connect your RTD/RTD+ device to your Mustang’s OBD-II port and to your PC via USB.
  2. Turn ignition to the ON position (do not start engine).
  3. Select Read Vehicle in RTD Flasher, then Gather Information and save your stock file.
  4. Email your stock file to 5 Star Tuning.
  5. Download your custom tunes once received.
  6. Use RTD Flasher to resync, apply credits, and load your tune file.
  7. Select Write in RTD Flasher to install your tune, then follow prompts to cycle ignition.

Wi-Fi and a charged Windows laptop are required. Installation typically takes only a few minutes.

Do I Need a Shop to Install?

No—installation is straightforward and requires no special tools. Anyone can complete the process by following the provided steps.

Technical Support

For questions, call 1-855-827-7223 or email sales@beefcakeracing.com.

Important Notice

By ordering this product, you accept full responsibility for ensuring compliance with all applicable emissions and safety laws. 5 Star Tuning does not provide calibrations that disable emissions equipment. This product is not legal for sale or use in California. Orders from California will be canceled.

Fitment:

  • 2018 Ford Mustang 5.0L
  • 2019 Ford Mustang 5.0L
  • 2020 Ford Mustang 5.0L
  • 2021 Ford Mustang 5.0L
  • 2022 Ford Mustang 5.0L
  • 2023 Ford Mustang 5.0L

CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov