5 Star Custom Tunes w/ RTD Gen 4 Device (2024 - 2025 Mustang 5.0L)
Why Tune My Vehicle?
From the factory, your Mustangs PCM is calibrated for the average drivernot the performance enthusiast. This leaves valuable horsepower and torque hidden away, resulting in a lackluster driving experience. A 5 Star Custom Tune unlocks that hidden performance by recalibrating your PCM for maximum horsepower & torque, faster throttle response, clean shift points, improved efficiency, and a dramatically better driving experience.
Why 5 Star Tuning?
As the industry leader in Ford and GM tuning for trucks, cars, SUVs, and motorhomes, 5 Star Tuning delivers refined, vehicle-specific calibrations rather than one-size-fits-all solutions. Every tune is tailored to your needswhether thats more power, more torque, better drivability, or future mod support. Reliability is always our top priority, ensuring your Mustang runs safely and efficiently.
Dyno & Street Proven Tunes
Our tunes are dyno developed, refined, and tested across real-world conditions including daily driving, towing, and performance use. With over one million test miles logged on our own vehicles, you can trust that every 5 Star calibration has been proven before it reaches your Mustang.
Free Tunes for Life
As a Tunes for Life member, youll receive free tune updates for as long as you own your vehicle. Anytime you add new modifications, well update your calibration at no cost, ensuring your Mustang continues to deliver the best horsepower, torque, and efficiency possible.
Performance Benefits
- Unlocks hidden horsepower & torque
- Sharper throttle response for improved acceleration
- Optimized shift points and transmission strategies
- Improved fuel efficiency and overall drivability
- Removes the factory speed limiter
- Enhances towing capacity and load handling
How Do We Get More Performance?
Our calibration team refines fuel maps, drive-by-wire throttle, ignition timing, torque converter strategies, shift strategies, and shift pressures to safely maximize your Mustangs performance potential.
What Can My Device Do?
The RTD Gen 4 Device is more than just a flash programmer. It can:
- Store up to 10 custom tunes
- Monitor engine parameters (RPM, coolant temp, speed, and more)
- Datalog to fine-tune calibrations for current or future mods
- Keep a backup of your factory tune so you can return to stock anytime
Using the RTD Gen 4 Flasher
Most applications use the HP Tuners RTD Flasher via Windows PC. A stable Wi-Fi connection and a charged laptop are required.
- Install the RTD Flasher software on your PC.
- Connect your RTD Gen 4 device to your Mustangs OBD-II port and PC via the provided USB-C cable.
- Turn ignition to ON (do not start engine).
- Select Read Vehicle > Gather Info in the software.
- Save your stock file (e.g., FirstName LastName stockfile) and email it to 5 Star Tuning.
- Receive custom tune files via email, download them, and load them through the RTD Flasher.
- Resync interface, license controllers, and write tune to your vehicle following on-screen prompts.
- Cycle ignition when promptedyour 5 Star Custom Tune is now installed.
Do I Need a Shop to Install?
No. Installation is DIY-friendly and requires no special tools. Most customers complete the process in minutes.
Technical Support
For assistance, call 1-855-827-7223 or email sales@beefcakeracing.com. Our team is here to help with the tuning process every step of the way.
Important Notice
By purchasing this tuner, you agree to comply with all U.S., Canadian, and international emissions laws. 5 Star Tuning will not disable emissions systems such as O2 sensors, DPF, EGR, or SCR.
Not legal for sale or use in California. Orders from CA will be canceled.
Fitment:
- 2024 Ford Mustang GT 5.0L
- 2024 Ford Mustang Dark Horse 5.0L
- 2025 Ford Mustang GT 5.0L
- 2025 Ford Mustang Dark Horse 5.0L
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

