Quote:
Originally Posted by Coyote X
...With E10 I noticed mine pretty much always stayed pegged at adding more fuel and it was more or less close with the fuel mix that way.
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this jibes with the "tiny vacuum leak" comment I saw on the other forum, where it ran out of adjustment room on e10 and mpg was restored after fixing it. How hard is tweaking the fuel pressure up a couple notches? maybe an inverted efie would help if it is a firmware limitation? Some slightly larger flow injectors from the boneyard?
Also, not sure about just using a vacuum gauge to identify leaks
http://www.aa1car.com/library/vacleak.htm