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King of the Universe
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Might want to reconsider.....taken from a thread on HCS (dated 3/14).

"gov. granholm (d) signed into law today pa 530. snowmobiles mfg. 1980 and newer will have to meet noise decibel standards. 50% of michigan snowmobile trails are on private property. (leased) mi senate passed 37 -0 mi house 82-5."

*Jan. 2004 SAE J2567 stationary test overview: The sound meter microphone is placed 4 feet above the ground, inline with the exhaust outlet/center point of multiple exhaust outlets, on the side of the snowmobile toward which the exhaust is directed, 4 meters distance from the snowmobile longitudinal centerline. The operator holds the brake during the test, starts and runs the engine up to normal operating temperature, then slowly opens the throttle until a steady 3,750 to 4,000 rpm is achieved for not less than 4 seconds. The test is immediately repeated and the two readings averaged.
 
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