Rejoice: Mountune Will Give Your Ford Focus RS 370bhp Without Killing The Warranty

We already knew that the ladies and gents at Mountune were cooking up some Focus RS upgrades, but not the power increases nor the cost. Until now, that is.

The company has revealed that its Phase I kit - consisting of a new high-flow air filter, a smattering of new hoses, an upgraded blow-off valve and a flashed ECU - is good for a 25bhp boost. That brings the total power from the RS’s 2.3-litre turbo four-cylinder to 375bhp, and drops the 0-62mph time from 4.7 to 4.5 seconds. Oh, and torque is up by 29lb ft too.

It costs just £899, takes only an hour and a half to fit, and as it’s a Ford-approved upgrade it won’t harm your warranty. According to reports, it should eventually be available Stateside too.