This S5 Cab got some impressive performance upgrades thanks to APR. We installed the APR Supercharger PUlley upgrade and corresponing ECU upgrade along with the APR Carbonio Stage II air intake pipe.

The APR Supercharger pulley upgrade spins the supercharger slightly faster allowing higher boost pressures at lower engine speeds. The result is a peak increase of 80lb/ft of torque and 108hp at the wheels. The gains are throughout the entire rev range, and the increased low end torque is very noticeable.

The Carbonio Stage II air intake replaces the tube between the air filter box and the throttle. The factory tube includes sound dampening and some rough, restrictive, edges. The carbon fiber Carbonio tube has a very nice smooth transition and increases both sound and performance.