Anyone modified there oem air boxes

[Caterry88]

Curious if anyone has modified the oem intake boxes. If so any pics of what you did to them. Also any added noise or benefits. Wanting to do BMC or kn dropins with air scoops.

[tomlong]

I believe there was one forum member who actually did but I can't remember his alias.

If you are going to do air scoops and currently tuned with a software platform that provides data logging capabilities, I would love to see if you can log your air charge / pressure pre and post installation of the scoops vs no scoops.

And yes, it would be awesome if some evaluated the performance of drop-in filters (K&N vs BMS) against each other.

[jpy1980]

https://f80.bimmerpost.com/forums/sh....php?t=1745199