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			Interesting. How do these compare to K&N or other oiled filters? They are marketed as performance; what does that mean? Increased HP? if so, how much? What does long lifespan mean? How long in terms of months, years do they last? Is there a difference in sound compared to cold air intakes?
		 
		
		
		
		
		
		
			
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				5280 Cruising @High Altitude 
Seal Gray & K&N Filter
			 
		
		
		
		
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