Quote:
Originally Posted by Chance
The most common way to improve economy on an old engine like V10 is to run it leaner, which can cause damage, and I wouldn't risk it on mine to save a couple of dollars. I have 176,000 on V10 and would bet I wouldn't have saved enough on gas to pay for the "tune".
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I never ran the economy tune on my F-350, always the performance tune. Put a good 60,000 miles on that tune before trading it in for the Axis. Ran great the whole time.
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