A Subaru Impreza WRX STI unlike any other is currently coming to life in Ontario, Canada and is shaping up to be one of the most remarkable engine swap projects we’ve seen in quite some time.
Although the 2009 Impreza WRX STI was initially a regular vehicle, John Proulx changed the engine from the original to a Toyota 2JZ. This Toyota 2JZ is the Supra MkIV’s most famous model. However, driving a Supra-powered Subaru apparently wasn’t exciting enough for Proulx, so he has now removed that engine and is working on installing a twin-turbocharged V12.
See also: Subaru WRX 2022 Gets 3 HP More and First-ever Adaptive Suspension
Proulx has recently spoken with GTspirit about the project, revealing that this will be the world’s first Subaru WRX STI equipped with a V12 engine. It was imported from Japan and comes from the Toyota Century. Toyota’s 1GZ-FE V12 was built from 1997 to 2017 and produces 276 hp as per Japan’s gentlemen’s agreement. Proulx however, has installed forged pistons, rods, and valvesprings. He also added a pair G30770 turbochargers to the engine and 1000cc Bosch fuel injectors.
While the Century’s V12 is typically mated to either a four-speed or six-speed automatic, the man behind this project is using a dual-clutch transmission from a 2009 BMW 335i that will power the rear wheels through a Ford 8.8 diff.
Proulx still has a lot of work to do on the car, but he is hoping to achieve the 1,000 HP mark with the highly-modified engine. Proulx also hopes that the Subaru will be comfortable on the road and still capable of running 9 second quarter-miles.
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