I don't have any experience with the Sy Klone, but if you're specifically looking for dust separation be careful about going for too big a size.
I run a Donaldson pre-cleaner (one of the round clear bowl types). I sized it up according to engine max air consumption and ended up with the 300mm bowl (I think!!) and a 75mm inlet. I did a trip to Cape York a few years back with a mate who had a smaller Donaldson, but same 75mm inlet. 
He ended up with much more dust in the bowl than I did on any given leg. Identical engines and gearing so assuming he wasn't traveling constantly in someones else's dust I'm guessing that because we were just cruising mine didn't have enough airflow to create the air velocity for efficient dust separation.
Yes, a smaller unit will create more of a restriction. In my case I run the pre-filter in dusty conditions, and just a normal snorkel head otherwise.
Food for thought if nothing else 
Steve
				
			 
			
		 
			
				
			
			
				1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
1988 120 with rust and potential
1999 300tdi 130 single cab - "stock as bro"
2003 D2a Td5 - the boss's daily drive
			
			
		 
	
Bookmarks