MPG after 02 sensor disconnect - Victory Forums - Victory Motorcycle Forum
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post #1 of 45 (permalink) Old 06-15-2012, 04:26 PM Thread Starter
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Default MPG after 02 sensor disconnect

48 mpg from calculator after 3 tanks of gas. I didn't expect it. Before that it was between 41-44. Same type of riding, conditions EXCEPT it is hotter, and I wonder if summer gas formulation might increase some? I did not notice any other difference other than maybe a slight decrease in rpm on a given gear/speed. It's a keeper. Thanks to the forum for the posting of that procedure.

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post #2 of 45 (permalink) Old 06-15-2012, 04:30 PM
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48 mpg from calculator after 3 tanks of gas. I didn't expect it. Before that it was between 41-44. Same type of riding, conditions EXCEPT it is hotter, and I wonder if summer gas formulation might increase some? I did not notice any other difference other than maybe a slight decrease in rpm on a given gear/speed. It's a keeper. Thanks to the forum for the posting of that procedure.

maurice
no change noticed.still 44-5. my calculations, not the bikes.

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post #3 of 45 (permalink) Old 06-15-2012, 04:45 PM
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? I did not notice any other difference other than maybe a slight decrease in rpm on a given gear/speed. It's a keeper.
maurice

UUUMMMMMMM...........Engine speed and wheel speed are affected only by gearing. No matter what is done to an engine control system; a specific speed will be reached at a specific engine RPM

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post #4 of 45 (permalink) Old 06-15-2012, 04:56 PM
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What would give the impression of that maurice is that if the fueling improves and the motor is making more power then it requires less throttle to attain a given speed. 65 would still be 2500 (approximately) no matter what but it may take 1/8 less throttle turn to get there.
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post #5 of 45 (permalink) Old 06-15-2012, 05:13 PM
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Originally Posted by maurice View Post
48 mpg from calculator after 3 tanks of gas. I didn't expect it. Before that it was between 41-44. Same type of riding, conditions EXCEPT it is hotter, and I wonder if summer gas formulation might increase some? I did not notice any other difference other than maybe a slight decrease in rpm on a given gear/speed. It's a keeper. Thanks to the forum for the posting of that procedure.

maurice
You get better mileage in the heat because the air is less dense and thereby easier to cut through.




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post #6 of 45 (permalink) Old 06-15-2012, 09:57 PM
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so does the unplug hurt your MPG then?
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post #7 of 45 (permalink) Old 06-15-2012, 10:20 PM
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Wow, I'm puzzled why you would do that. The whole point of the o2 sensor is feedback to the controller for fuel/air ratio. Run it too lean and you will start making a mess of your motor. Might take months to trash it, mike take minutes. But yes, your mileage will get better.
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post #8 of 45 (permalink) Old 06-15-2012, 10:22 PM
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You get better mileage in the heat because the air is less dense.
Fixed that for you. Lower air density means less fuel needed. Motor makes less power too.
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post #9 of 45 (permalink) Old 06-16-2012, 02:09 AM
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Fixed that for you. Lower air density means less fuel needed. Motor makes less power too.
Engine will make less absolute power, but if all else were equal, it would still need X amount of power to propel Y amount of mass at Z speed. All else is not equal however. The less dense air requires less force to move through. The equation is something like F = kv^2 where k is the viscosity of the fluid (in our case air) and v is the velocity.




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post #10 of 45 (permalink) Old 06-16-2012, 04:19 AM
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Normally O2 sensor fault in a car goes to a RICH fault mode. So you are burning more fuel. Lean burn does not make sense. O2 sensors and cats is to help pollution and global warming. Now you are starting to smell like a stinky Harley. LOL

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