Today is holiday,
nothing to do so decide to take out 2parts in my car and clean:

1) K&N Air Filter, after 27k-km clocked,
Finally take out wash it with K&N Recharger Kits...

Dirty Air Filter:
[attachmentid=2006101]

In process of cleaning and drying:
[attachmentid=2006103]

Apply total 3x times cleaner to loosen the dirt.
K&N Air Filter Oil will be apply after it dry completely...
temporary using stock air-filter first.
2) Air-Cond Blower, after 52k-km clocked.
At first not intend to remove it just wanted to clean the air-cond filter,
but after see see look look seems like only 3xscrews can remove, so give it a try lor...

Dirty Air-cond Blower:
[attachmentid=2006110]
* the dusts i guess got few mm thick... 

After Clean and Dry:
[attachmentid=2006116]

Total 3hours spend on above jobs. 

According to singchaii,
air-cond blower for Waja and Gen2 is same location :

here is the photo:

[attachmentid=2009613]

disconnect the 3xblue circles connector/hose first,
then unscrew the 3xred circles screws...
you should be able to take out the whole air-cond blower.

Easy to remove but take time to re-install back... 
you need something or someone to hold the air-cond blower in order to re-screw back.
hope this helps.