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Originally Posted by broski499
I have an ultragauge hooked up and it has been calibrated
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Can it display LOAD of the engine ?
See if there's much difference between the load at 55 and 60.
Quote:
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I have found that at just above 60MPH I get right round 40 to 42 mpg this is steady. On my way from Bakersfield to OC I got an average of 36 MPG on this trip. From what others have told me I should get better MPG at 55 but I don't isn't this strange?
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Try the different speeds repeatedly - for a full tank - so outside influences start to even out a bit.
If the car stays in the same gear, the lower speed should get better FE.
If it drops a gear, you can expect FE to suffer.