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Old 10-17-2006 | 06:47 PM
  #6  
Harry Lagman
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From: Auckland, NEW ZEALAND
Default RE: GMS 47 tuning problem
The GMS .47 is delivered with one of two muffler types:

1) A finned, two piece unit that looks like a stock OS style muffler.

2) A three piece "Tower style" muffler with a shiny centre section.

The engine, properly set up, will run well on either muffler and will yield about 300-500 rpm more on the Tower style muffler.
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