Petrolheads, assemble: it’s a new Porsche 911 GT3. Which is basically like saying ‘it’s a new Bowie album’ to the music nerds. This is benchmark sports car, the one by which the steering feel, chassis composure and engine response of every other supposed supercar on the market is measured against. The 992 GT3 gets a racecar engine, a ginormous wing and a rather special new knob. And this is what happens when Chris Harris is tasked with running that glorious 4.0-litre flat-six engine in, just so he can open the taps and spank it around a track.

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