Official Mountune upgrades for Ford Fiesta ST and Ford Focus ST will be available in selected European markets from September 2013. The Mountune developed packages boost output from the Focus ST’s 2.0-litre EcoBoost engine to 275 hp. Even the Ford Sierra Cosworth RS500 would be left with a rear view of the Mountune-upgraded Focus ST, which can sprint from 0-100 km/h (0-62 mph) in less than 6 seconds – more than half second faster than the standard Focus ST. Ford is also offering an official Mountune upgrade for the Fiesta ST, which will increase the maximum power available to 215 hp, enabling acceleration of 0-100 km/h (0-62 mph) in 6.7 seconds, compared with 6.9 seconds on the factory model.
The Mountune upgrades boost both Focus ST and Fiesta ST in-gear acceleration. Peak Focus ST torque boosted to 400 Nm improves 50-100 km/h (31-62 mph) acceleration in fourth gear by 0.8 seconds to 4.9 seconds. Peak Fiesta ST torque boosted to 320 Nm improves 50-100 km/h (31-62 mph) acceleration in fourth gear by 0.7 seconds to 5.7 seconds.
The Focus ST Mountune upgrade is available in silver and in black and includes a cast alloy inlet duct, high-flow air filter element, larger alloy intercooler and unique calibration. The Fiesta ST version has a re-modelled air box base with secondary inlet duct, a high-flow filter element and unique calibration.
Any Mountune-appointed Ford dealer will be able to fit the upgrade quickly – less than 60 minutes for the Fiesta ST, and less than 90 minutes for the Focus ST. Both are fully compatible with the Ford warranty, meaning Mountune modified vehicles continue to be covered against mechanical failure for three years or 60,000 miles from the original date of purchase.