The S1 Roadster takes air from the same place Heinz but tests have shown that the airflow in that position is very turbulent. The box will keep hot engine bay air away but the cone filter would probably work as well without it. A side scoop might be a bit more effective but the best high pressure area is in front of the screen where the heater box is.


DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4