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Old 6th September 2007, 04:21   #1
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Speedometer Calibration After a Differential Gear Upgrade

After upgrading the differential using the DINAN 3.45 gears for example has anyone attempted to correct the speedometer reading? Can Powerchip make the speed correction? http://www.superlift.com/media/video...v=PPV-TRUSPEED http://www.superlift.com/accessories/truspeed.asp http://www.jetchip.com/products.asp?pid=14944
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Old 6th September 2007, 04:32   #2
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Originally Posted by RUFM5 View Post
After upgrading the differential using the DINAN 3.45 gears for example has anyone attempted to correct the speedometer reading? Can Powerchip make the speed correction? http://www.superlift.com/media/video...v=PPV-TRUSPEED http://www.superlift.com/accessories/truspeed.asp http://www.jetchip.com/products.asp?pid=14944

Speed is determined at the wheels and not the diff so changing the diff doesn't affect it.

See: Speedometer vs. GPS - Dinan 3.91 Installed
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Old 6th September 2007, 04:40   #3
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Speed is determined at the wheels and not the diff so changing the diff doesn't affect it.

See: Speedometer vs. GPS - Dinan 3.91 Installed
Doesn't your spreadsheet indicate a marginal <5% speed difference with the 3.91 gears?
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Old 6th September 2007, 04:44   #4
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Doesn't your spreadsheet indicate a marginal <5% speed difference with the 3.91 gears?

That's just standard margin of error that happens regardless of the diff.
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