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Promoted: Making power gains simple

Putting VP Racing Fuel into your car can be just as effective a means of improving performance for club racers as bolting on a new set of tyres

Engineering

Our experts' guide on how you can become a better racing driver

It's a grey-and-gloomy Tuesday morning when Autosport ventures west along the M4 to a garage on the perimeter of Castle Combe. As the inevitable rain takes hold, the shelter offered by Circuit Motors seems very appealing.

Inside, a modified 1.6-litre Ford Fiesta ST180, not a million miles away from those regularly appearing in the Castle Combe Racing Club's (CCRC) Hot Hatch Challenge Series, is straining on the tethers keeping it arrow-straight on a dynamometer. And hitting some eye-catching numbers too.

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