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Old 10-03-2012, 10:51 AM
robertobaggio20 robertobaggio20 is offline
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Join Date: Oct 2009
Posts: 3,403
Mein Auto: car
There was a recent thread here where someone changed out the blower motor and the microfilter in his car and received much stronger fan speeds as a result. He was clear that the biggest factor in the improvement of the fan's speed was the microfilter by a long mile. This is a DIY, although it is meticulous as the microfilter is accessible via the glove compartment and you need to make sure nothing breaks when you dismantle stuff to reach it. There are many DIYs published out there guiding one through this. The microfilter itself is really cheap - $20. Since you are doing a partial refresh of you ac system, I strongly recommend that you swop out your microfilter as well. The least you're going to get is alot cleaner air. Pictures of old clogged microfilter are quite sickening.

Here's the thread I was referring to earlier :

http://www.bimmerfest.com/forums/sho...d.php?t=646819



cheers, Roberto
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