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Old 12-21-2010, 01:05 PM
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Speedometer Calibration?

I just put 37's on my stock 20's. I stopped by the dealer today and was told they could correct it but I read on the site here that Ford only went up to 35's when it comes to correcting speedos. Wanted to see if anyone had new info on this before they soak me for $100 and tell me it can't be done. I was also told by this dealer they couldn't adjust the TPMS. That's 2 dealers now that have said they can't help me with TPMS. Thanks for any help.
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Old 12-21-2010, 03:15 PM
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My dealer couldn't adjust mine for 35"s. I corrected it with the Mini Maxx.
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Old 12-21-2010, 06:07 PM
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I originally used a Hypertech Speedometer Calibrator and it worked like it was supposed to but eventually ended up with an SCT programemr that does the same. Found the Hypertech on Ebay
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Old 12-23-2010, 01:21 PM
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When you correct your speedo with one of the popular tuners does it also fix your odometer and mpg gauge?
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Old 12-23-2010, 01:33 PM
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It should because they are both ran off the speedo. But the MPG gauge does work off of load and the big tires could screw with that.
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