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New Mountune Ford Focus ST Factory Upgrade Kit Adds 23 HP, 26 LB-FT

Upgrade your Focus ST, keep your warranty.

The ManufacturerphotographerJake HolmeswriterPatrick M. Hoeyphotographer

Almost every car enthusiast wishes their car had more horsepower, but juicing up your ride can mean affecting factory warranty coverage. For owners of the 2013-2015 Ford Focus ST, there's now a solution in the form of a factory performance upgrade kit. Developed with European tuning company Mountune, the new Focus ST package gives the car's 2.0-liter turbo-four an extra 23 hp and 26 lb-ft of torque.

With the Mountune performance pack, the 2013-2015 Ford Focus ST will produce 275 hp and 296 lb-ft on 93-octane gasoline, up from 252 hp and 270 lb-ft in the factory-specification hot hatch. The Mountune package includes a new air-induction kit, a high-flow intercooler, various mounting hardware, and a handheld programmer tool for reflashing the car's engine computer.

If the package is installed at a Ford dealership, it won't even affect the Focus ST's three-year/36,000-mile warranty. The upgrade is also 50-state emissions legal.

While Ford says installation prices will vary from dealer to dealer, the packages themselves are reasonably affordable. The upgrade kit starts at $1,900 for the 2015 Ford Focus ST and $2,149 for the 2013-2014 ST, or $1,359 if ordered without the handheld reprogramming tool.