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Old 01-05-2012, 10:41 PM
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SCT speedo cal

I have the SCT X3 and I went to calibrate my speedo and you cannot calibrate for tire revs/mile less than 600. I run 35s on my truck that equates out to about 580 for tire revs/mile. Is this the same for everyone? Its kind of wierd for SCT to only allow for the speedo cal to only go down that far.
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Old 01-06-2012, 08:11 AM
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Its not SCT, the device is only allowed to set the parameters that ford allows, ford only allows the revs to go down to 600
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Old 01-06-2012, 10:48 AM
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That seems strange, even my SCT X-2 that I have had for years will go down to 500 revs/mile.

Edit - after more reading about it, it sounds like you can go down to 500 revs/mile for the tranny shifting only,
the new firmware for speedometer adjusting will only go down to 600 revs/mile which is the same as what the dealer can go down to!

Last edited by GregsSD; 01-06-2012 at 11:09 AM.
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Old 01-06-2012, 11:32 AM
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yes i can too set it way down from 600 cant remember exact number, but that wount correct my speedo cause of -03 model ex ....

but it works to trans i have 35" summer tires and with those my speedo is 3-4mp/h off .
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Old 01-06-2012, 11:36 AM
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Ahh I see, oh well then close enough I guess. Haha!
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