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Stock JK Tech Bulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.
View Poll Results: How accurate do you find the fuel computer?
Right-on
9
23.08%
Off one way or the other
30
76.92%
Voters: 39. You may not vote on this poll

Accuracy of the Fuel Computer

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Old Dec 8, 2009 | 02:51 PM
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Default Accuracy of the Fuel Computer
I never compared mine with hand calculated numbers, has anyone taken the effort to do so over a long term run?
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Old Dec 8, 2009 | 03:00 PM
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You only went up an inch in diameter so the reading probably would have dropped a bit, not much.
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Old Dec 8, 2009 | 03:24 PM
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reads 18 and good ol' math tells me closer to 16. these are numbers from when im hard on the skinny.
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Old Dec 8, 2009 | 03:34 PM
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Mine stock was always 2-3 mpg better than what was actually calculated. Now with superchips it's dropped to 1-2 mpg better than calculated.
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Old Dec 8, 2009 | 03:58 PM
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Yep: Superchips recaled and gettin 1 mpg actual mileage less than dash display
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Old Dec 8, 2009 | 04:13 PM
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same here...my calculated numbers are about 1-2 mpg less than what my jeep tells me
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Old Dec 8, 2009 | 04:54 PM
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Are we talking about resetting the ODO and the MPG meter when we fill up the tank and compare numbers when we fill up again?
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Old Dec 8, 2009 | 04:59 PM
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Yep, starting from zero each time.
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Old Dec 8, 2009 | 05:01 PM
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My computer average is off 4/10 of a mile per gallon on the high side.
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Old Dec 8, 2009 | 05:05 PM
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Same here, about 1-2 mpg less when calculated. Computer milage is just wishful thinking.
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