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I wonder if it would be different if the fuelly app could connect to the obd to measure fuel coming out of the injectors.
Or Just take the indicated readings and take away about 1mpg. The fuel tank/vapor recovery system is like filling up a balloon. The ECU doesn't have all of the variables to correct for that. It thinks it's using less gas than what you are putting in.
www.caranddriver.com
Or Just take the indicated readings and take away about 1mpg. The fuel tank/vapor recovery system is like filling up a balloon. The ECU doesn't have all of the variables to correct for that. It thinks it's using less gas than what you are putting in.
Why Your Trip Computer Isn’t Giving Accurate MPG Readings
And how to fix it. Cars' on-board fuel-economy meters can be inaccurate up to several percentage points.
www.caranddriver.com
