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Old 09-25-2009, 03:07 PM   #12
FastDoc   FastDoc is offline
 
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Join Date: Mar 2009
Location: Southeastern Washington desert
Posts: 14,761
Very significant. The OHC engine seems intrinsically quieter than the OHV in the HSUN, and it is more powerful so it is working less hard at any given speed. Also, the HSUN's 'bodywork' was set up in such a way as to direct engine noise at the rider. The exhaust was also quite a bit louder.
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