APR 3.0 TFSI Supercharger Drive and Crank Pulley with Belt (Press on) MS100184
Upgrading both the supercharger drive and crank pulleys results in the factory supercharger spinning ~26.4% faster than stock.
This speed was chosen after extensive engine and chassis dyno testing with various pulley sizes and supercharger speeds.
The result shown higher horsepower and torque gain across the entire RPM range.
However, the airflow level achieved with a dual pulley setup, maximum power is severely restricted by the factory throttle body unit.
The APR Ultracharger Throttle Body Upgrade is necessary to take full advantage of the dual pulley configuration.
It is available in platform of specific variations for the B8/B8.5 A4/A4/S4/S5, Q5/SQ5 and C7 A6/A7.
APR's Supercharger Drive Pulley Upgrade decreases the diameter of the factory pulley from ~63.25mm to 57.75mm, which in turn spins the supercharger ~9.5% faster.
This results in a healthy bump in horsepower and torque across the entire RPM range with the supercharger operating at a higher rate of speed.
The pulley is CNC machined from billet stainless steel, e-coated black for an OEM appearance and is press fitted to the factory supercharger unit.
APR's Supercharger Crank Pulley Upgrade increases the diameter of the factory pulley from ~162mm to ~187mm, which in turn spins the supercharger ~15.4% faster.
This results in a larger bump in horsepower and torque across the entire RPM range, as the supercharger is spinning at an even higher rate of speed.
The pulley retains the factory harmonically balanced crank pulley and bolts on top of the existing unit.
Belt included Software are sold separately. Please note, specific software is required to maximize output with this product. Use part number MS100025 to remove the factory supercharger drive pulley.
