The 300-horsepower Impreza WRX STI gains a further edge in all-wheel drive performance for 2006. The power distribution ratio in its advanced Driver Controlled Center Differential (DCCD) version of Symmetrical All-Wheel Drive has been changed from 35:65 to 41:59 and uses a new mechanical limited slip center differential in place of the previous hydraulically controlled unit. The addition of a steering sensor to the differential’s control inputs further enhances torque transfer and overall performance of the AWD system.
Posted on April 29th 2008 in robson.m3Rlin.org
