Thread: 390 fe at the dyno, help please
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Old 04-24-2009, 04:27 PM
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jdean jdean is offline
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John,

If you have an older set of pipes that came with the CR, then you are right they are VERY restrictive. I think it is about 1.5" diameter pipe running through there. I agree with you, you should replace those mufflers!

John
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