Thread: mileage difference
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Old Sun, April 24th, 2011, 06:41 PM
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Longshot270 Longshot270 is offline
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So you got 23 mpg city with the tow tune while the performance tune got 13 under the same or similar conditions on paper?

If cleaning everything doesn't help then you might try changing back to stock for a few days then switching back to the performance tune.
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