A more sporting turbocharged version of the 1.4-liter engine was made available in Japan from the time of the facelift as the 1400 GT Turbo, originally only in the three-door hatchback. To handle the additional power, the suspension was made firmer, the brake servo was upgraded, and the driveshaft was changed to an equal-length design featuring a central bearing. The small turbocharger, of Mitsubishi's own manufacture, unusually sat between the intake and the twin-barrel carburetor. The engine was equipped with a knock sensor, enabling it to run on petrols of various octane ratings. The compression ratio was also unusual, fairly high for its time at 8.7 to 1. The Turbo also used the twin-range Super Shift transmission. In Japan, the Turbo was also available with the five-door hatchback bodywork, a version that was rarely exported (if at all). Japanese buyers could also opt for the new turbocharged Lancer Fiore/Mirage Saloon 1400GT; all three of these turbo versions arrived in August 1982. Mitsubishi distinguished the 1400GT with a hood mounted air intake, unique interior, uprated suspension and brakes, and the equalization of the drive shaft lengths to reduce torque steering.