5 Star Custom Tunes w/ RTD Device (2007 - 2014 Shelby GT500 5.4L / 5.8L)
Bring modern performance technology to your classic powerhouse with 5 Star Custom Tunes for the 20072014 Shelby GT500 5.4L and 5.8L. Our RTD device and custom calibrations unlock hidden horsepower, torque, and throttle responsedelivering a driving experience that matches the legendary Shelby name.
Why Tune Your Shelby GT500?
Factory calibrations are conservative, leaving performance on the table. With a 5 Star custom tune, your GT500 gains:
- Significant horsepower & torque increases
- Sharper throttle response for instant acceleration
- Optimized shift points for stronger pulls
- Improved drivability with cleaner, more responsive power
Why 5 Star Tuning?
5 Star Tuning is the industry leader in Ford and GM performance. Unlike generic one-size-fits-all tunes, we deliver custom calibrations tailored to your vehicle and your driving goals. Whether youre chasing track times, cruising the street, or adding future modifications, our tunes strike the perfect balance of power, reliability, and efficiency.
Dyno & Street Proven
Our calibrations are dyno tested, road proven, and refined over a million test miles on real-world vehicles. This ensures your GT500 runs at peak performance under every condition.
Free Tunes for Life
With our Tunes for Life program, every new upgrade to your GT500 is supported by free tune updates for as long as you own the car. That means your performance keeps improving with every modificationat no extra cost.
How We Unlock More Power
Our tuning experts extract hidden potential by adjusting:
- Fuel and ignition timing tables
- Drive-by-wire throttle calibration
- Shift strategies and transmission logic
- Torque converter and load management
What the RTD Device Can Do
The RTD Device makes tuning simple and versatile:
- Stores up to 10 custom tunes
- Real-time monitoring of RPM, temps, and more
- Datalogging for future mods and fine-tuning
- Factory tune backup lets you return to stock anytime
HP Tuners RTD Flasher Setup
The RTD Flasher software (Windows PC required) allows you to read, save, and flash your GT500s PCM. A strong Wi-Fi connection is required. Easy-to-follow instructions are provided, and our support team is ready to assist with setup and flashing.
Easy Installation
No tools. No shop visit. Anyone can install this tuner at home in minutes.
Support
For technical help, call us at 1-855-827-7223 or email sales@beefcakeracing.com. Our experts are here to guide you through the process.
Important Notice
- Buyer assumes responsibility for compliance with all federal, state, and international emissions laws.
- 5 Star Tuning does not disable or remove emissions equipment.
- Not legal for sale or use in California. Orders from CA will be canceled.
Fitment:
- 2007 Shelby GT500 5.4L
- 2008 Shelby GT500 5.4L
- 2009 Shelby GT500 5.4L
- 2010 Shelby GT500 5.4L
- 2011 Shelby GT500 5.4L
- 2012 Shelby GT500 5.4L
- 2013 Shelby GT500 5.8L
- 2014 Shelby GT500 5.8L
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

