Subaru Impreza WRX Chop-Top by Car Service Hiro

Car service Hiro has unveiled their chop top Subaru Impreza. To get the Impreza converted from showcar to racecar, the Subaru EJ20 boxer engine got the full treatment to bring the power up to Nakamura's requirements. All the internals were carefully evaluated and anything deemed not strong enough to handle extra boost from the turbocharger was swapped out for upgraded pieces.

The EJ20 now sports upgraded Marley forged pistons and metal head gaskets. WPC treated the connecting rods and crankshaft to reduce internal engine friction. New camshafts from JUN with more aggressive profiles help the boxer engine breathe like it should. The Brova exhaust manifolds help prevent the cylinders from overheating, a syndrome common to the EJ25. An AVO turbo kit was put in place to crank up the boost.

To keep intake temperatures under control with all that boost, Nakamura added a massive intercooler from ARC V. It not only gets the job done but also looks serious with all that Darth Vader-style plumbing. A MoTeC engine control unit keeps the spark in check and 800cc injectors with a Bosch fuel pump feed the hungry beast all the fuel it needs. A Trust 15 oil cooler keeps the engine's overall heat in control. Car Service Hiro also custom fabricated a dedicated radiator, muffler and even a catalytic converter.

The stock six-speed transmission is still in place, but an ORC twin-plate clutch and Cusco limited-slip differentials both front and rear help the power get to the 18-inch SSR wheels. After that, 265/35R18 Yokohama tires grip the tarmac with the tenacity needed for serious cornering.