Originally Posted by Ian///M
Drop in filter won't add anything. Better off running OEM paper filter.
If you mean hp/torque, I think the same way, there should be little to no gain in power. But I am curious to see if there will be any gain in throttle response. I also plan to put the car in dyno testing after the filter change which will be done at the same time with the charge pipe fix (ER). As long as there will be no loss in power but noticeable gain in response after these changes, I will consider it worthy (I know I will never know if it is just the charge pipe though, but I am busy and/or lazy to make them seperately).
"The mark of a great car is one whose overall competence exceeds what you should expect from its individual components and the 1M does just that", Chris Harris.
2011 BMW 1M: TECH: Evolve Race+N55mids, Evolve IC, Michelin PSS, ER cp, aFe filter, CDVx, Vorshlag camber plates, P3Cars, OCC EXTERIOR: trunk spoiler, blacklines, black grills, IND goodies INTERIOR: Alcantara steering wheel, steel pedals, custom mats, MPower e-brake.