The filters are that cheap anyway i'd just change them all .....super easy ...will take you all of 2 mins to do.......:thumbup:

You'll need one Air Filter and 2 Microfilters there's one on each side in the engine bay.

UPDATE :

Here's the DIY to change the Microfilters :

http://www.bimmerfest.com/forums/showthread.php?t=260208

.

 

The filters are that cheap anyway i'd just change them all .....super easy ...will take you all of 2 mins to do.......:thumbup:

You'll need one Air Filter and 2 Microfilters there's one on each side in the engine bay.

Tech would u recommend K&N intake filter? My friend used one on 2001 330ci and he started to have problems with airflow and engine light started coming up. So guy at INDI shop told him that could be the cause. I used k&n on my Nissan with short ram and chained MAF sensor manytimes. 500$ a piece. So what can u say bout k$n high flow reusable air filter. Thx

 

I am pretty sure microfilter different to air intake filters ?


THE MAF wont be effected by microfilter ?

 

I am pretty sure microfilter different to air intake filters ?

THE MAF wont be effected by microfilter ?

They sure are