This awesome Cosworth Subaru Impreza STI CS400 is in every sense the Lion’s roar!
Legendary tuning firm Cosworth has gotten its hands on the Impreza STI and heavily overhauled its engine to produce a scintillating 395bhp at 5,750rpm. That means the car can get from 0–100km/h in a supercar-beating 3.7 seconds, which is a massive 1.5 seconds faster than the standard STI.
But how the hell has Cosworth managed to squeeze this sort of pace out of a 2.5-litre, flat-four engine? As you may already have guessed, the answer is lots of boost and some trick bits. Starting with the internals, Cosworth has changed the STI’s pistons, rods, bearings, head gasket and oil…
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