Flap or no flap - Does it effect performance ?

[GregorFuk]

Originally Posted by select

Btw for those who are running without the flap. You can unplug the flap-motor and store it away. It doesn't give you an error in the dash, nor does it raise an error code. Incase somebody didn't know already.

To be honest the flap motor is a standard BMW part used for many applications. They regularly come up on eBay second hand for around £12.