WMD -
Besides making more noise - shortening the silencer will typically shift power lower in the powerband (given the same diameter). Longer silencer enhances top end power whereas a shorter silencer enhances low end response (on a 2 stroke).
As far as getting a "bible study" - When you are advocating an act that will put our riding areas in jeopardy - it's not too surprising that you are catching a bit of flak.
jeff
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