APR 22-24 Audi A3/A3 Quattro/22-26 Volkswagen GTI EA888.4 (MQB EVO) 2.0T Turbo Inlet System

We were able to increase the diameter as large as possible with the best geometry from the turbo to the intake airbox to promote the maximum amount of flow with the lowest pressure drop. The system starts at 80mm and can expand up to 88mm for larger airbox systems. For any given size inlet there is a theoretical maximum flow limit, but in real world testing the actual results are typically around 90%. On the GTI we set out to achieve this limit and hit 90% of the ideal maximum with the APR turbo inlet! This means the turbo doesn't have to work as hard, which translates to lower temperature, and improved performance.