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AKADriver · 01-20-2003, 05:33 PM

The S13 has a variable intake, that's what the "swirl control valve" is for.

01-20-2003, 05:33 PM	#10
AKADriver Post Whore! Join Date: May 2002 Location: Springfield, VA Age: 43 Posts: 3,517 Trader Rating: (1)	The S13 has a variable intake, that's what the "swirl control valve" is for.