Roush Technologies’ Mountune Performance division has unveiled a range of dealer-fit upgrade packages for the Ford Fiesta ST. The stock Fiesta ST’s normally aspirated 2.0 litre DOHC engine produces 150 PS at 6,000rpm and 190Nm of torque at 4,500rpm.
A Stage 1 Mountune Performance upgrade kit using intake and exhaust upgrades as well as ECU reprogramming takes this up to 165 PS and a much nicer torque curve with 200Nm of torque produced between 3,500rpm to 5,000rpm.
The Stage 2 kit adds stronger valve springs and more aggressive camshafts to result in 185 PS and a torque increase to 200Nm between 4,500rpm and 6,000rpm. There is also an optional sportier suspension kit, and an interior kit using Recaro sports seats.
Roush will announce upgrade kits for the Focus ST later.