2003-2005 Mitsubishi Lancer Evolution Evo and 2004-2005 Subaru WRX STi

Production-based racing has unleashed some of the world's most ferocious cars onto the road--the Porsche 911 Turbo, the Audi Coupe Quattro--but none has been as accessible as the two cars gathered for this test. The Mitsubishi Lancer Evolution and the Subaru Impreza WRX STi are every bit as authentic as the aforesaid duo, but the nature of their underlying World Rally Championship formula makes them far more practical. They are, at their core, economy cars, albeit ones that have been given every advantage a works-racing program can confer. From humble family sedans come these Manson Family sedans, which are subsequently, perhaps foolishly, re-released into normal society.
Their path back to street legality is a familiar one. Just as the Porsche 911 formed the basis for the first Group 5 turbocharged Carrera, which then led to the roadgoing 911 Turbo, so have the Subaru and the Mitsubishi navigated the homologation Mbius strip, where production cars beget competition cars that beget production cars, and so on. Bouncing from the rally stage to (other countries') streets and back again for a decade, as these two have, has forged two sedans that are not only armed with the latest in amortized racing technology but also suited ideally to our times: They are roomy enough for a small family, cheap enough to register as true performance bargains, fast enough to shame many an '80s supercar, and frugal enough to keep you on the right side of the petroleo-moral debate.
Because they have gone knee-to-groin for so long in rally sport, their roadgoing personae are aimed more directly at each other than almost anything else on the road. Like any cars built to a formula, they achieve their similar ends by similar means: four-cylinder turbocharged engines, low curb weights, four-wheel-drive systems, monstrous rear wings, manual transmissions, and similarities in look and comportment too obvious to mention. This is the enthusiast's version of Accord versus Camry, except, instead of trying to be all things to all people, the STi and the Evo hope to alienate as wide a swath of humanity as possible. These cars aren't for the general citizenry, which is convenient, since they will come in limited batches of just 3600 (STi) and 6500 (Evo).

If their only mission were to scare people, the Subaru might have the edge. It has ten-spoke forged alloy wheels that, set face-up, look like venomous spiders. This super-WRX also has a new, Peter Stevens-designed (McLaren F1) front fascia, side spoilers, and rear bumper; a tall hood scoop; a dual-element rear wing; and more body blisters than a burn victim. The STi's interior begins to resemble a racing car's, too, with blue perforated faux-suede buckets, a small-diameter steering wheel, and a blank plate where the radio should go. There are no floormats, no armrests, and thin glass, all in the interest of lower weight.
At the scales, the STi is within 50 pounds of the standard WRX, but the STi is heavy with rally technology. Perhaps the only element not taken over wholesale from the WRC program is the STi's 2.5-liter engine. WRC rules specify displacements no higher than 2.0 liters, but Subaru wanted the STi brand to make a bigger U.S.-market entrance than its 2.0-liter could provide, hence the familiar 2.5-liter, tuned to within an inch of its life. It makes a satisfyingly round 300 horsepower and 300 pound-feet of torque via 14.5 psi of boost. Lag from this large-capacity turbocharger is offset by a variable valve timing system, hollow camshafts, and a drive-by-wire throttle, all of which enhance engine response. An intercooler, 30 percent larger than the one in the WRX, has a manual, in-car water spritz to lower the intake charge temperature. The engine's block is stiffer than stock, and its thermal stamina is higher, thanks to sodium-filled exhaust valves and thicker piston crowns.
Before delivering power to all four wheels, the engine runs through a six-speed manual and something Subaru calls its Driver Controlled Center Differential. While it's true that this system can be adjusted by the driver, you'd have to be Richard Burns to think you could apportion torque more effectively than the algorithm can. In the automatic mode, a computer-controlled clutch overrides the center differential's action, which is geared for a 35/65 percent front/rear split. For traction discrepancies within the same axle, the STi has limited-slip differentials front and rear, each of a different design (see sidebar).
Suspending all this are four struts that fit into the WRX's wheelside holes, with one crucial difference: They are upside-down. Inverting the struts in accordance with the laws of black-wizard rally craft is a means of increasing their bending stiffness and internal volume. The larger size boosts both damping capacity and fade resistance. There are also cross-member braces front and rear for an exceptionally stiff ride bed.
Brembo makes the brakes, 12.7-inch discs front and 12.3-inch discs rear. Unlike the WRX, with its front twin-piston calipers, the STi uses four pistons at the front and two at the rear. An electronic brake distribution system is standard.
The Mitsubishi Evo also has disc brakes large enough for family-style dining, but the overall sophistication of the car relative to the STi is slightly lower. The Evolution may be farther away mechanically from the stock Lancer than the STi is from the WRX, but bear in mind that the gulf in performance, excitement, and refinement between the base Lancer and the WRX is almost Mexican in width.



