APR 3.0 TFSI Supercharger Drive and Crank Pulley with Belt (Press on) MS100184
1. APR's Supercharger Drive Pulley Upgrade decreases the diameter of the factory pulley from ~63.25mm to 57.75mm,
2. This reduced drive pulley diameter spins the supercharger ~9.5% faster.
3. 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.
4. 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.
5. Apart from that, APR's Supercharger Crank Pulley Upgrade increases the diameter of the factory pulley from ~162mm to ~187mm.
6. You will enjoy the increased crank pulley diameter spins the supercharger ~15.4% faster.
7. An excellence horsepower improvement is significant due to increase of supercharger spinning.
8. The pulley retains the factory harmonically balanced crank pulley and bolts on top of the existing unit.
9. It is CNC machined from light weight billet aluminum with great weight saving. It has an anodized black finish and includes new crank pulley bolts.
10. If you upgrade both the supercharger drive and the crank pulleys, it will resulted in the supercharger spinning ~26.4% faster than stock.
11. This specification was chosen after extensive engine and chassis dyno testing with various pulley sizes and supercharger speeds.
12. The result gives a higher horsepower and torque gain across the entire RPM range.
13. However, for the airflow levels achieved with a dual pulley setup, maximum power is severely restricted by the factory throttle body unit.
14. Thus, the APR Ultracharger Throttle Body Upgrade is necessary to take full advantage of the dual pulley configuration and is available in platform specific variations for the B8/B8.5 A4/A4/S4/S5, Q5/SQ5 and C7 A6/A7.
15. Belt Inclusive of Software is sold separately.
16. Please note, specific software is required to maximize output with this product. Use part number MS100025 to remove the factory supercharger drive pulley.
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