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The 2021 WRX STI With Subaru’s New Powerful 400Hp Engine

Outstanding Power Boost Expectations

The Subaru’s WRX STI is bound for a significant redesign to come 2021. Sources near the Japanese automaker disclose to Forbes that the cutting edge 2021 WRX STI will employ an all-new 2.4-liter Boxer turbo engine, called the FA24, generating 400 Horsepowers and 361 lb-ft of torque.

That’s an outstanding power boost over the current WRX STI (304 hp and 311 lb-ft of torque), The Subaru’s current Japan-spec WRX STI is controlled by a changed and tuned variant of the Impreza WRX’s 2.0-liter Boxer turbo engine, referred as the EJ20. That engine has been around since 1989, in various emphases since it appeared in the original Subaru Legacy.

According to Forbes’s sources, the current WRX American spec 2.5-liter boxer turbo engine, featuring the EJ25 engine, will remain in service until the next-generation WRX Series is introduced after 2021.

Severer fuel economy and emissions laws demand a  more reliable, efficient engine and the all-new FA24 Boxer turbo engine has been identified as the brand’s best choice. Subaru enthusiasts will immediately realize that the FA24 boxer turbo just happens to be the same engine that powers the  2019 Ascent SUV where it’s turbocharged and makes 260 hp and 277 lb-ft of torque.

2021 WRX Expected Engines Specs

In the 2021 WRX STI spec, however, that same FA24 engine will receive significant upgrades to achieve the desirable 400 hp. According to Forbes sources, the reworked FA24 in STI spec will employ a reinforced crankshaft and pistons, optimized timing balance, fine-tuned valves, and intake ports, boost pressure will be tweaked and brake capacity will be enhanced, among other modifications. In addition, the next-gen 2021 WRX STI will receive a version of Subaru’s full-time symmetrical All-wheel-drive ‘AWD‘ system and enhanced braking capability, expect nothing less than class-leading performance and handling.

READ  2020 Subaru Ascent | Biggest Subaru's SUV for North America

Subaru engineers are said to be benchmarking the 2.0-liter turbo found in the Mercedes-AMG A 45s, CLA 45s, and new GLA 45s, which makes an impressive 415 horsepower and 368 lb-ft of torque and currently recognized as the most powerful 2.0-liter series-production four-cylinder engine on the planet.

What about the styling of the next-gen 2021 WRX and STI? Expect to draw inspiration from the recent Viziv Performance and Viziv Performance STI concepts first seen at the 2017 Tokyo Motor Show. Characterized by a low, wide body and huge flared fenders, the Viziv concept was one of Tokyo’s highlights back in 2017.

 

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