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					Originally Posted by  DennisAN
					 
				 
				IIUC the HF is an older clunkier design, but still accurate.  The patents on this design apparently have expired so you can copy it cheaply. 
			
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That's what I kind of thought myself as the Sears one I paid $80 years ago was not any better.  In fact my HF one us doing a much better job.
		  
		
		
		
		
		
		
			
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				1999 986 2.5L, Stock Exhaust (S muffler), EVO Intake, 18" Stock rims (17" during winter), IMS Upgrade, 150k+ miles and counting! 
87 944S brought back to life
			 
		
		
		
		
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