MCW
Somebody's talking crap here & it ain't the tree!
Nice video. The 660s seem to have more grunt than a 390 for sure.
Burvol found a K&N filter that will fit under the cover and uses an outerwear. Maybe I can get the part numbers from him and that might help you guys out over there with the filtration.
Thanks mate. I'm sure a ported 660 will walk away from a ported 390XP in larger wood but this thing with a pop up is in another league.
At this stage I'll see how this filter goes but Stihl Australia now have a setup that will apparently keep the finer dust out with no filter oil. In fact I think Andrew (Stihlman441) above runs that setup? It is smaller than the extreme conditions filter kit previously offered and actually fits under the standard filter cover.