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The 2015 Subaru WRX STI has been unveiled in full at the Detroit Auto Show last week. As promised, it’s a marginally more hardcore version of the WRX sports sedan, as tuned by Subaru Tecnica International (STI), offering more power and visual pizzazz over the standard model.

You can’t miss the giant rear deck wing, which has always been a WRX STI signature. The rest of the vehicle is as per the standard WRX, save for a few STI badges and the lightweight 18-inch BBS wheels – painted gold to go with the WR Blue paint as part of the limited 1,000 unit-run Launch Edition.

The customary hood scoop feeds not the newer direct-injection 2.0 litre FB Boxer found in the WRX, but the outgoing STI’s EJ-series 2.5 litre turbocharged flat-four engine that produces 305 hp at 6,000 rpm and 394 Nm of torque at 4,000 rpm. Top speed is said to be 264 km/h, though no acceleration figures have been mentioned.

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While the standard 268 hp/350 Nm WRX gets a choice between a six-speed manual transmission and an optional eight-speed Sport Lineartronic CVT, the 2015 WRX STI is only offered with the former. So those with a lazy left foot need not apply, then. The manual tranny links up to Subaru’s Symmetrical All-Wheel Drive system.

Subaru claims the new chassis is significantly stiffer than before, and this top-of-the-line model adds on STI-tuned suspension, a quicker steering and a Brembo Performance Brake System over the regular WRX model. It promises “even greater handling agility and precision.”

New to the STI is Active Torque Vectoring, now joining a host of electronic and mechanical driving aids that include Subaru Intelligent Drive (SI-DRIVE), Multi-Mode Driver Controlled Centre Differential (DCCD), Three-Mode Vehicle Dynamics Control and Super Sport ABS.