Thread: Replacing Both Primary and Secondary on 1990C4
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Bill Verburg Bill Verburg is online now
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Garage 
Section	        Flow Rate (CFM)

Catalytic Converter	 442

Primary Muffler	         396

Secondary Muffler	 462


here are some #s that backup Britwrenchs suggestion
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Bill Verburg
'76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone)
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Old 06-20-2006, 01:45 PM
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