A blue bottle is simply a 1-2 foot long piece of steel 3" piping..that converts to a 1.5" inlet..and a 2" outlet...the outlet/inlet is bent at a 15 degree angle or so from the muffler chamber..
(it looks like a "red hot" or "purple hornie"..except..imagine the tube to be 3 inches in diameter)
but thanks!!!
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