Join Date: Sep 2009
Location: Farmerville Louisianna
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The new style wether it be Standard or Pro the routing is the same, the old standards ran a different route and caused more heat issues, the heat and sound is similar, the Pros are a little louder, almost no heat difference on the same like set up, as far as whisper cores I know they make them for the Pros, I think now you can get them for both and you hear different opinions on HP, some say on a stock engine that the standards dyno a fraction better than the Pro but with a big bore you will for sure get a little more out of the Pro, very little difference in price, makes you wonder why Muzzy still build both instead of being like Dasa and just build one, makes you think that maybe on a stock machine that the Standards are tuned a little better for stock with just a touch more back pressure. No big difference just go with your gut.