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Ford launches performance upgrades to muscle-up the Mustang GT, EcoBoost

The current-generation Ford Mustang is no slouch, but for buyers who aren’t satisfied with stock, Ford has a way to add some extra power to this muscle car.

Through its Ford Performance division, the carmaker is offering performance upgraded for the Mustang EcoBoost and Mustang GT. The upgrade packages increase power output, while remaining 50-state emissions and compliant and maintaining the factory warranty.

A “calibration kit” for the turbocharged 2.3-liter, four-cylinder EcoBoost engine provides an extra 25 horsepower and 70 pound-feet of torque, on top of the 310 hp and 320 lb-ft the engine makes in stock form. The kit boosts power throughout the engine’s rev range, according to Ford. That should make it easier for drivers to gain access to that extra power.

Read more: Shelby American launches its latest tuned Mustang

Ford is also launching three upgrades packages for the Mustang GT and its 5.0-liter V8, which makes 435 hp and 400 lb-ft of torque in stock form. Each package adds a no-lift shift feature for manual-transmission cars, and bumps power more than the last. The mildest option includes a “unique performance calibration” and high-flow air filter, adding 13 hp and 16 lb-ft.

From there, a second package includes a cold air intake, 87-millimeter throttle body, and an intake adapter from the Shelby GT350 Mustang. These items add 21 hp and 24 lb-ft. Finally, the third package raises the redline to 7,500 rpm, and provides gains of 37 hp and 5 lb-ft, according to Ford.

All EcoBoost four-cylinder V8 and upgrade packages are available for 2015 and 2016 models with both manual transmission and automatic cars. Automatics also get different shift logic to match the engine upgrades. The kits are available to order now through Ford’s performance parts website. Their launch comes as Ford prepares to shut down Mustang production for a week in response to slow sales. The Flat Rock, Michigan, plant that builds the Mustang and Lincoln Continental is expected to be idle until October 17, according to Bloomberg.