i was confused too doax, just gotta buy into his logic to see the explanation....
Quote:
Originally Posted by mja1
...Measured target AFR will be 5-15% over the actual, meaning you'll be running slightly lean. If this lean event is not enough for the ECM to add enough fuel to noticeably effect long term fuel trims, you'll net slightly better mpg...
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and i think the 'if' will be over in about 2 seconds