Buy a supercharger or cold-air kit from Ford Racing and a Performance Calibration handset comes with it to reset the ECU for the upgrade. Now Ford Racing is offering the ProCal handset a la carte for $595, allowing you to reflash the ECU on your EcoBoost-equipped ride to extract more of its inherent capabilities without any additional upgrades. It gives you control of variables such as throttle response, idle speed and turbo wastegate control, among others.

As for that warranty asterisk, the press release says enthusiasts can up the power "while maintaining the Ford-backed limited warranty." However Ford Motor Co. and Ford Racing are separate entities, and, best we can tell, when you reflash the ECU, your Ford warranty gets supplanted by the Ford Racing warranty. Say you bought a 2014 Ford, that means your five-year, 60,000-mile warranty becomes Ford Racing's three-year, 36,000-mile warranty, if we're reading the fine print correctly. If you have an older car and have driven more than 36,000 miles, then your warranty options are kaput, at least as far as a Ford in-house option. If have warranty concerns, you might also want to consider having a dealer perform the reflash, or at least ask about it.

Once you've got past the small print, what about the numbers? At the moment Ford Racing offers tunes for the 2.0-liter EcoBoost in the Focus ST and the 1.6-liter EcoBoost in the Fiesta ST, and we're told there's a 90-pound-foot boost in torque at the crank after you've pressed the right buttons. Anecdotal evidence from a commenter at Road & Track says he went from 252 horsepower at the flywheel to 254 hp at the wheels, and 272 lb-ft at the flywheel to 354 lb-ft at the wheels, but we can't be sure that his adjustments were within Ford Racing specs. Your mileage, naturally, may vary.