5 Star Custom Tunes w/ RTD Device (2015 - 2017 Mustang 5.0L)
Unleash the hidden performance of your 2015-2017 Ford Mustang 5.0L with a 5 Star Custom Tune and HP Tuners RTD device. From the factory, your Mustangs PCM is built for average driversnot enthusiasts. This leaves horsepower, torque, and drivability on the table. With a 5 Star calibration, youll experience maximum horsepower and torque, sharper throttle response, optimized shift points, improved efficiency, and a more engaging drive.
Why Choose 5 Star Tuning?
5 Star Tuning is the industry leader in Ford and GM custom calibrations. Each tune is tailored to your exact Mustang and driving style. Whether you want more horsepower, stronger acceleration, support for future mods, or smoother everyday drivability, 5 Star ensures performance and reliability go hand-in-hand.
Dyno & Street Proven Performance
Our calibrations are dyno-developed, road-tested, and refined over a million miles in real-world conditions. From towing to track runs, our engineers test on their own vehicles to deliver the most consistent, safe, and powerful tunes on the market.
Free Tunes for Life
As part of the Tunes for Life program, youll get free tune updates for as long as you own your Mustang. Anytime you add performance upgrades such as an intake, exhaust, or throttle body, well recalibrate your tunekeeping your Mustang optimized at no extra cost.
Performance Benefits
- Increased horsepower and torque
- Sharper throttle response
- Improved acceleration and drivability
- Optimized transmission shift points
- Removed factory speed limiter
- Better efficiency with added performance
How We Unlock More Power
5 Star tunes optimize critical areas such as fuel mapping, ignition timing, drive-by-wire response, torque converter control, and shift strategies. These refinements unleash your Mustangs true potential while maintaining long-term reliability.
RTD Device Features
The HP Tuners RTD device is more than just a flash tool. It allows you to:
- Store and load up to 10 custom 5 Star Tunes
- Monitor live engine parameters (RPM, speed, coolant temps, and more)
- Datalog your Mustang for fine-tuning and future mods
- Revert back to your factory tune at any time
Step-by-Step Install Process (Windows PC Required)
Note: Wi-Fi and a Windows laptop are required. Ensure your laptop is charged or plugged in before starting.
- Install and open the RTD Flasher software.
- Connect the RTD/RTD+ to your Mustangs OBD-II port and your PC via USB-C.
- Turn ignition to ON (do not start engine).
- Select Read Vehicle ? Gather Information in RTD Flasher.
- Choose Read Entire for each module (engine/transmission).
- Follow prompts to cycle ignition as needed.
- Save the stock file (e.g., FirstName LastName stockfile) to your desktop.
- Email the file to 5 Star Tuning.
- Download your custom tunes when received.
- Reopen RTD Flasher, resync the interface (credits are included with purchase), and load your custom tune file.
- Select Write Calibration, follow the prompts, and cycle ignition when requested.
After completion, your Mustang will be running a 5 Star Custom Tune.
Installation Made Easy
Flashing your Mustang with the RTD takes only a few minutes. The process is simple, requires no tools, and can be done by anyone with a Windows laptop.
Support
Have questions? Call 1-855-827-7223 or email sales@beefcakeracing.com for expert technical support.
Legal Notice
By purchasing this tuner and tune package, you agree to comply with all federal, state, and international emissions laws. 5 Star Tuning does not provide calibrations that disable emissions equipment such as O2 sensors, DPF, EGR, or SCR systems.
This product is not legal for sale or use in California. Orders from California will be canceled.
Fitment:
- 2015 Ford Mustang 5.0L
- 2016 Ford Mustang 5.0L
- 2017 Ford Mustang 5.0L
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

