Ford Upgrades Focus ST EcoBoost Power

Ford has pumped up the power of it’s new Focus ST so much that it accelerates faster than the previous generation Focus RS.

Boasting a 2.3-liter EcoBoost motor, the five-door hatchback breaks the 62mph barrier from standstill in just 5.7 seconds on the way to an electronically restricted 155mph top speed. The extra performance comes courtesy of a power output hiked to 277bhp coupled to a 309ft-lbs of torque from the twin-scroll turbocharged four-cylinder gasoline engine.

Its low-inertia twin-scroll turbocharger scavenges exhaust gasses more effectively producing more power and delivering boost pressure faster. Separated exhaust channels transfer the gas pulses from cylinders one and four, and two and three – minimizing pulse interference for a consistent flow of energy. Ford’s anti-lag technology claims to be able to electronically hold the throttle open for up to three seconds after the driver backs off the accelerator, preventing blow-back of air from the turbocharger to maintain compressor wheel speed.

Keeping the turbocharger primed for immediate response and maintaining positive pressure in the intake manifold when off throttle allows for faster resumption of both boost pressure and combustion when the driver returns to the accelerator. In addition, an electronically actuated turbocharger waste-gate allows closer control of boost pressures for enhanced engine performance.

The car also employs Ford’s first electronic limited slip differential for a front-wheel drive car plus a six-speed manual or a seven-speed automatic transmission. Leo Roeks, Ford Performance director, Europe, said: “The all-new Focus ST is about more than just straight-line speed but the ability to go toe-to-toe with the now legendary Focus RS over a quarter-mile sprint shows just how much the Ford Performance team has moved the game on in the last four years. We’ve drawn inspiration from the Ford GT supercar, F‑150 Raptor pick-up, Ford Mustang and Fiesta ST to develop a Focus ST capable of punching you in the back the moment you hit the throttle.”

— Paul Myles is a seasoned automotive journalist based in London. Follow him on Twitter @Paulmyles_

 


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