Cosworth has fettled with the Subaru WRX STI to produce promising results. The finely tuned machine designated the Subaru Cosworth STi CS400 has been improved in more ways than one. The selling point of this car is the fact that the power output has been increased from the usual 296 hp to a significantly higher 395 hp.

The 0 to 100 figures will be in the region of 3.7 seconds and will continue to a top speed of 250km/h. The increase in power output has done wonders for the maximum torque, with the production of an amazing 539Nm. This is equivalent to the acceleration of the Lamborghini Gallardo LP560-4!

All this power is extracted from the 2.5-litre four cylinder turbo boxer engine along with the help of high performance pistons, connecting rods, head gasket, oil pumps and bearings. The standard turbocharger has been reworked with the addition of a new compressor design and wastegate actuators.

Handling on the car will probably be different as the chassis is a joint effort between Cosworth, Bilstein and Eibach. The list of changes include new coil springs that lower the car’s ride height by 10mm and the increase in the size of the front brakes, which are now 355mm AP Racing discs. This is hidden behind the 18 inch alloy wheels that widen the track of the car by 12mm.

You will get the addition of a new front bumper, foglights, mesh grilles and rear spoiler. Inside, the centre console is finished in a piano black theme while the Recaro bucket seats and tinted back mirrors maintain that sporting persona.

Colour options are limited to just silver, dark grey and red. Only 75 of these machines will be made, and will only be available in the UK.

Look after the jump for a picture gallery.

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