Even though it has yet to reach the shores of the UK, the new Subaru Impreza STi has already been tweaked by Prodrive to give more power.

Subaru Impreza STi Prodrive

If you haven’t heard of them, Prodrive are the British firm responsible for running the Subaru WRC team as well as releasing fantastic tweaked Imprezas for road use.

As for previous Imprezas, they have developed a set of performance tweaks that are available as the Prodrive Performance Pack (PPP). On the new STi this means an extra 100bhp, taking the 2.5 litre flat-four to 397bhp. Even though this is a huge increase on the original engine’s power output, the PPP still comes with a three year warranty for that extra peace of mind.

The PPP only increases engine performance, so you may want to consider additional suspension and brake packages that are on offer. There are also cosmetic enhancements available, including the usual alloy wheels and bodykits.

The STi is launched in the UK in March 2008, expect to be able to order your PPP sometime shortly after.