Worm A much better forum Silver Donating Members 3,808 Member For: 16y 7m 6d Gender: Male Location: Victoria Posted 24/09/11 09:29 PM Share Posted 24/09/11 09:29 PM Flow better? No... Well... It's arguable... Both have a surface area of about 38/39 inches squared... However, the flow characteristics also depend on bend and shape... 4 inch will definitely flow more...Quieter? No.. Louder? Yes... Link to comment Share on other sites More sharing options...
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