Originally Posted by neilyo
Thanks man. I am a convert from Audi S4 to 328i Wagon, I would like to get a little monies from 328i's engine.
The gain in the Performance Air Intake is not more than 3% tops physically but in your heart it feels exhilarating. What you get is a very beautiful carbon fiber air duct right at the front of the engine, the duct pathways is less restricted but you are still retaining the OEM air box, so the effective increase in filter area is nil.