Sat, April 4th, 2009, 02:04 PM
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Bacon King
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Join Date: Jan 2009
Location: Central Coast, CA
Posts: 86
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Quote:
Originally Posted by orygunf150
Reading this thread
http://www.ford-trucks.com/forums/836709-odo.html
I am also wondering, does changing the tire size on our programmer also change the Ford speedo or just the programmer? My Ford speedo is a few mph off but the Gryphon reads about right, (according to my GPS). |
If your Gryphon matches your GPS, you're fine. Odo will also be correct. Your speedo will be 3% higher than your actual (GPS) speed because Ford set it that way.
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2007 F150 XL, 4.6, Regular Cab, Gryphon Installed 2/2009
"voiding warranties since 1979"
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