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Discussion Starter #1
Will adding a bolt on and not remapping change the gas milage? I dont think it should but im not certain. Im getting around 39mpg now and dont want it to change.
 

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Probably not. You really don't need to remap with a bolt-on. Doing so will smooth out the on/off throttle feel, however. When I had a 2bros bolt on (prior to installing my full system) I ran with a PC and dynojet map for awhile, then the PC crapped out and I rode it without it. Ran fine either way.
 

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Discussion Starter #3
I would like to have a two brothers. I am going to use this D&D until I get some extra cash to get one.
 

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Since you will be leaning out the mixture you may have to roll on the throttle slightly more which may give you a slight drop in mileage. I would not expect more that 1 or 2 mpg loss.
 
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