Our computer programs suggest 300 is closer to the real number. But those reports didn't come with performance-test numbers.
We won't name names, but some reports place the 22B's output in the 350-to-380-hp range. Engaging the clutch smoothly was nearly impossible, but the clutch did withstand numerous high-slip launches without fading. To take this sort of abuse, Subaru employs a twin-plate ceramic-and-metal clutch for better heat resistance. Launching a high-horsepower four-wheel-drive car is usually a dicey proposition, since getting a good launch requires slipping the clutch brutally. Zero to 60 mph whooshed by in only 4.7 seconds, 100 mph in 13.1 seconds, and the quarter-mile in 13.5 seconds at 101 mph. But move the dial to the "locked" position, and the two axles are effectively locked with 50 percent of the engine's torque going to each axle.ĭuring acceleration testing, we experimented with various differential settings, but the acceleration times remained identical. If the rears slip, more torque is directed to the front wheels. At the open or lowest setting, the multiplate clutch on the planetary center differential directs 65 percent of the engine's torque to the rear wheels. The Impreza 2.5RS uses 205/55HR-16 tires, and the 22B gets 235/40ZR-17 90Y tires.Īlso on the dash is an adjustable center-differential switch. The wider fenders made room for bigger tires. The four-point racing belts aren't stock, however, which is good because they're a pain to adjust properly. The seats are racy-looking and offer nearly perfect support. There are even water injectors, controlled by a switch on the dash, in the scoop to further cool the intercooler during hard running. The hood scoop, which is only for show on the 2.5RS, feeds air to the intercooler on the 22B. We'll get to the performance later, but what's best about this car, besides that, are the numerous details that not only look trick but are functional as well. Since 1994, when the Impreza rally car made its debut, Subaru has earned three manufacturers' championships and one drivers' championship. follow the World Rally Championship with about the same enthusiasm as they follow synchronized swimming, but the rest of the world gets more excited.
The fender bulges do a perfect job of replicating the rally version of the Impreza. Visually, the 22B is similar to the Impreza 2.5RS sold stateside, except for the fender bulges at each corner.
This has led to wild speculation that the 22B' s output is way more than 280. This number is a bit suspect because among Japanese automakers there's a voluntary horsepower limit of 280 in the home market. As for horsepower, Subaru says the 22B pumps out 280. We can't tell you how much boost pressure the 22B uses because Subaru won't divulge the information. There's still a single turbocharger and an air-to-air intercooler making the intake charge cooler and denser. An increase in cylinder bore punched out displacement to 2.2 liters, which Subaru says makes for better midrange torque. Mechanically, the 22B’s major difference from the Type R STi is its bigger engine.
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