Backpressure creates torque, but decreases power, so you could possibly free up your exhaust enough to make your car slower if not enough horsepower is created to compensate for loss in torque.
Former Owner 1998 Red SVT Purchased 10/16/00 Sold 04/19/02 # 897/6535 15.308 @ 89.95
02 Camaro SS Purchased 04/01/02 13.27 @ 107.54 @ 780 Miles
