AL GUY Posted April 17, 2008 #1 Posted April 17, 2008 Here are some pics of an RSV muffler that I opened up. If you look closely at the rear section you will see tha drilling holes in the rear cone does nothing if you don't also drill the second plate. I can post more pics if anyone wants a specific view. AL
az1103 Posted April 17, 2008 #2 Posted April 17, 2008 I gather you were trying to find out why the usual "muffler rape" didn't produce any worthwhile improvements in sound ?!
Gold Rush Posted April 18, 2008 #3 Posted April 18, 2008 Is That a 1st Generation muffler? I'm guessing it is...... I drilled holes in the rear place of my '00 MM limited and there was a MAJOR change in the sound!!!! I agree drilling the pictured muffler would not produce any change though...
AL GUY Posted April 18, 2008 Author #4 Posted April 18, 2008 I was just curious but I don't see a practical way to open up a large chamber that would be needed for a deeper tone. I haven't heard any of our bikes with modified mufflers but I would suspect that they are louder but without the deep mellow tone that I like. My stock mufflers have the perfect tone but I wouldn't mind a little more decibels. If I ever modify my mufflers I will attack the inside of the chamber that has the wire mesh and get the fiberglas packing out. AL
AL GUY Posted April 18, 2008 Author #5 Posted April 18, 2008 The number stamped on the muffler is 4xy-1. I believe this corresponds to the number for a 1999 RSV according to the service manual posted on this board a 4xy-2 would be a California model. Other years may have different mufflers. AL
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