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Old 01-23-2013, 11:57 AM
curtisfarmer curtisfarmer is offline
LawnSite Senior Member
Join Date: Nov 2007
Location: Southern, NH
Posts: 511
Am I reading correctly that they reduce the HP in the 450s and 550s? Seems like it would be the opposite. My 08 450 has never gotten better than 7.3MPG.
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