5 Star Custom Tunes with RTD Device (2015 - 2017 Mustang 2.3L EcoBoost)
Transform your 2015-2017 Mustang 2.3L EcoBoost with a 5 Star Custom Tune and HP Tuners RTD Device. Factory ECU calibrations are designed for the average driver, leaving horsepower and torque on the table. A custom recalibration unlocks your Mustangs full potentialdelivering more power, sharper throttle response, optimized shift points, better efficiency, and an exhilarating driving experience.
Why Choose 5 Star Tuning?
5 Star Tuning is the industry leader in Ford and GM performance tuning. Unlike one-size-fits-all tunes, every calibration is tailored to your exact driving needswhether that means more horsepower, stronger torque, smoother drivability, or tuning for future modifications. Reliability is always prioritized, ensuring performance without compromise.
Dyno & Street Proven Performance
Each tune is dyno-tested, refined, and validated in real-world conditions. With more than one million test miles logged on their own vehicles, 5 Star delivers tunes that are proven on the street, track, and under load.
Free Tunes for Life
As your build grows, your tune evolves with it. With Tunes for Life, recalibrations are free for as long as you own your Mustang. Add new mods and keep your EcoBoost performing at its peak. For program details, call 1-855-827-7223.
Performance Benefits
- Increased horsepower and torque
- Sharper throttle response
- Removal of the factory speed limiter
- Smoother, more precise transmission shifts
- Improved efficiency and drivability
How 5 Star Unlocks More Power
Expert calibrations optimize key systems including:
- Fuel tables and air/fuel ratios
- Drive-by-wire throttle mapping
- Ignition timing
- Torque converter strategies
- Shift points and shift pressures
RTD Device Features
The HP Tuners RTD Device is more than a flash programmerits a complete tuning solution:
- Store and load up to 10 custom tunes
- Monitor real-time engine parameters (RPM, speed, coolant temps, and more)
- Datalog for additional fine-tuning with current or future modifications
- Save a copy of your factory tune and return to stock at any time
RTD Installation Overview
The process is simple and requires no shop visit:
- Install the RTD Flasher software on a Windows laptop.
- Connect the RTD/RTD+ device to your Mustangs OBD-II port and your laptop via USB.
- Read and save your stock file, then email it to 5 Star Tuning.
- Download your custom tunes once received.
- License your vehicle through the RTD software, then flash the new tune following on-screen prompts.
Note: A stable Wi-Fi connection and Windows laptop are required. Average installation takes only minutes.
Important Notes
- Purchaser is responsible for compliance with emissions and safety regulations.
- 5 Star Tuning does not disable or bypass emissions equipment (O2 sensors, DPF, EGR, SCR, etc.).
- This product is not legal for sale or use in California. Orders from California will be canceled.
Fitment:
- 2015 Ford Mustang 2.3L EcoBoost
- 2016 Ford Mustang 2.3L EcoBoost
- 2017 Ford Mustang 2.3L EcoBoost
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

