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Gas mileage after pipe change

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Old Jan 29, 2012 | 09:57 AM
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Default Gas mileage after pipe change
Just curious, I put the rush slip ons yesterday, and was told by numerous people at the dealer and rush that you just put em on and go.

Seems like my gas mileage has increased after cahnging from stock. I wasnt sure if this was normal or not without getting a remap of the fuel. Should I be concerned or is that normal after a pipe upgrade? Buddy of mine was saying he thinks its fine but might cause some knocking when it gets hot out.

Just curious
 
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Old Jan 29, 2012 | 10:04 AM
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heck never complain about an increase in mpg lol. if you are too lean your bike usually lets you know.
 
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Old Jan 29, 2012 | 10:28 AM
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Lol...Def not complaining. Just want to make sure im not doing any unseen damage.
 
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Old Jan 29, 2012 | 10:35 AM
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Like someone said probably a little lean. Even with my setup and PCV I get an average of about 43 or 44 MPG.
 
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Old Jan 29, 2012 | 10:36 AM
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If it's fuel injected you got no problems. It will run the same a/f ratio as originally programmed. You may have a bit more power and aren't twisting your wrist as much to get going and maintaining speed
 
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Old Jan 29, 2012 | 10:36 AM
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Should I be concerned about it running lean, or is it not a big deal?
 
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Old Jan 29, 2012 | 10:41 AM
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Lean is hot. Hot is bad.
If all you did is change the mufflers, you are probably fine. It may be a combo of the lighter new mufflers, some better flow, and you may just be riding it a bit different now that it is louder.
 
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Old Jan 29, 2012 | 10:56 AM
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just the slip-ons you might be alright but if you put on an intake you should really get a download. you should probably get the download anyways because you will do the intake eventually


at best ive got 51mpg on some trips two up with the wife.
 
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Old Jan 29, 2012 | 12:48 PM
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So what kind of bike and what mpg are you actually getting?
 
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Old Jan 29, 2012 | 12:57 PM
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Originally Posted by jkeeton81
Should I be concerned about it running lean, or is it not a big deal?
If you do pipes and AC, the ECM will adjust back to the same EPA mandated 14.7 AFR, so it wont be any hotter. 14.7 is 14.7
 
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