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HI,

Your input would be apreciated. I had a full system Two Brothers (new) installed on my 2001XX before I even took delivery. I was told there was no need to have it tuned as it will self adjust. I recently installed a K&N filter. The bird flyes like a bat out of h... and does not miss a beat. I may be getting less mileage, but how much I do not know.
 

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Thanks Jim, just thought maybe running to lean and sucking down more gas.

Mark
if you were running lean you wouldn't be sucking too much gas, you wouldn't be using enough. If you are sucking down too much fuel the bike would be running rich.

Check the back of your can to see if they are black or not. If there is black around the exit of the can chances are the bike is running too rich.

Ideally you'd want to check the spark plugs but they are a bit of a pain to get to.
 
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