Integrated Engineering 57.5mm Press-Fit Supercharger Pulley UpgradeThe IE supercharger pulley for 3. 0T V6 Audi engines is a great mod to extract more power form your supercharger. Capable of up to 492HP on it's own with a IE stage 2 single pulley tune, or combine with IE 188mm crank pulley (IEBAVJ7) (Stage 2 dual pulley) for up to a massive 548HP! These power gains are achieved by spinning the supercharger unit significantly faster than stock for higher boost levels with pulleys and proper ECU tuning. IE's