The S550 Mustang GT (18-23) is a great car from the factory, but like every Coyote before it, there’s a lot left on the table. The Street Fighter Package is built around the upgrades that make the biggest difference without overcomplicating the car. A JLT Cold Air Intake helps the engine breathe easier, high flow catted headers open up the exhaust, and our custom tuning ties everything together so each part works the way it should. Using the included Shoemaker Performance RTD4 device, we’ll build both a 93 octane and E85 calibration specifically for your car. Every tune is written around your setup, not pulled from a generic file, so throttle response is sharper, the power comes on harder, and the car feels noticeably stronger throughout the RPM range while maintaining the drivability you’d expect from a daily driven Mustang. This isn’t about chasing dyno numbers. It’s about making the car feel the way it should have from the factory. Whether you’re carving up back roads, making passes at the drag strip, or just enjoying the drive home, the Street Fighter Package delivers a Mustang that’s quicker, more responsive, and simply more fun to drive. Package Includes JLT Cold Air Intake High Flow Catted Headers Shoemaker Performance RTD4 Tuning Device Custom 93 Octane Calibration Custom E85 Calibration