Acura enlarged the 1.6-liter 4-cylinder engine of the late-'80s Integra to 1.8 liters for the redesigned 1990 model. With four valves per cylinder, the new dual-overhead-cam engine developed 130 horsepower and 121 pound-feet of torque (a measure of rotational force, or pulling power). Again front-wheel drive, the car could have either a 5-speed manual gearbox or a 4-speed overdrive automatic transmission. The automatic had two electronically engaged shift modes: economy and performance, the latter with higher shift points. For 1992, engine output rose to 140 horsepower and 126 pound-feet. Then at midseason came the performance-focused GS-R hatchback, packing a smaller (1.7-liter) 4-cylinder engine that yielded greater horsepower (160), but a trifle less torque than its standard-fare mate. A special close-ratio 5-speed manual gearbox was the sole available transmission.