FU chip and tire size - Power Hungry Performance Forum

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FU chip and tire size

1999 to 2003 7.3L Power Stroke Diesel
7.3L Power Stroke Diesel equipped Super Duty and Excursion.

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#1

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Thu, April 7th, 2011, 06:10 PM

screagle07 screagle07 is offline

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FU chip and tire size

I just ordered the chip. On the order form I listed 315/75 R16 as my tire size. What can I expect if I go back to the stock tires (265/75 R16) to improve my fuel mileage and will I have to have my re-program the tunes I load onto my chip? Thanks in advance for the feedback.

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#2

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Fri, April 8th, 2011, 08:06 AM

cleatus12r cleatus12r is offline

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If you ordered the FU, then tire size is not accounted for anyway.

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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.

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