The Ford Focus RS is a pretty quick car out of the box. With 350 horsepower and 350 lb.-ft. of torque claimed by the factory, it can smoke a lot of other cars on the road. The guys at Blake’s Garage decided to park an RS onto their dyno to see just how accurate Ford’s numbers are, and later, see just how much power they can extract with some simple off-the-shelf modifications.
To get a reading on their two-wheel drive dyno, they decided to disconnect the rear-drive unit from from the driveline by simply unplugging it, rendering the car front-wheel-drive only. On 91-octane fuel, they were able to extract 282-horsepower and 328 lb.-ft. of torque from the wheels. Factoring in the normal 15 percent driveline loss from engine to tire, that’s around 324 horsepower and 377 lb.-ft. of torque at the crank. Not bad for an economy hatch.
After establishing some baseline numbers, a few common mods were slapped on to get the power up. Thanks to a Cobb Accessport and intake, Snail Performance tune, internal wastegate actuator, and a few other bolt-on bits, the tuned RS managed to put down 301 horsepower and 386 lb.-ft. of torque to the wheels. At the crank, that translates to roughly 346 horses and 444 lb.-ft. That’s some serious twisting power.