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Exhaust/tune question

744 Views 3 Replies 2 Participants Last post by  nakedinseattle
I did some searching but couldn't find the answer. This is probably a pretty noob question with an obvious answer, but I don't know the answer. My bike has a full Graves and a custom tune. If I change the exhaust to either a different full system or a 3/4 system with the stock header, etc., how much will it affect the tune, if any? Thanks for the info.


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Quite a lot. You'll need a new tune for the new exhaust.
Cool, thanks. I wasn't sure if essentially one open system equated to another. I could see it going either way which is why I wanted to make sure.


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Cool, thanks. I wasn't sure if essentially one open system equated to another. I could see it going either way which is why I wanted to make sure.


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different piping, diameters, bends, lengths, velocity etc = needs new tune. slip ons, as long as they are about the same dimensions, are the same thing but with full systems it's a bigger change
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