Do any Tuners Adjust your Speedo for Tires? - Ford Powerstroke Diesel Forum
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Old 12-21-2010, 12:44 PM
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Do any Tuners Adjust your Speedo for Tires?

I know it's a dumb question but I'm new to Fords and searched but didn't find anything probably because all you guys already know the answer . Most of my experience is with GM's and there speedos are adjusted via the tuner, but I checked on the Edge and Diablosport but neither seem to adjust the speedo for tires size.

Thanks!
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Old 12-21-2010, 12:53 PM
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Edge evolution CTS does

from the users manual"The CS/CTS Evolutions will allow you to re-calibrate the speedometer
for non-stock tire size. To do so select Tire Size in the Options
Menu.
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Old 12-24-2010, 03:21 PM
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My Superchips 1805 does too, got it used for $125, check the classifieds every now and then, someone may be selling one
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Old 12-27-2010, 08:18 PM
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You can't adjust the tire size with a tuner. You need to take it to the dealer or through auto-enginuity (don't know for sure on the latter). I took mine to the dealer and they charged me 1hr, so about $100. They can only go up to 35" tires if I remember correctly. If you go bigger, you need something like the superlift tru speed.
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Old 12-27-2010, 11:02 PM
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my superchips cortex does. and im selling it too!!!
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Old 12-28-2010, 04:52 PM
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so how far off will the speedo be? curious cuz my truck sits on 35s and i have wondered since i got it how much over the linmit ive been speeding?
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Old 12-28-2010, 04:58 PM
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You are off by about 10% if your truck came stock with a 265/75/16.

Also thanks for the replies to this thread. Good to know the tuners should be able to adjust my speedo.
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Old 12-28-2010, 05:31 PM
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so 10% faster than what speedo says right? thanks for the info!
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Old 12-30-2010, 07:17 AM
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AE can ajusts up to 40" tires... And you get one hell of a scan tool for free...
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Old 12-30-2010, 07:29 AM
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Quote:
Originally Posted by CSIPSD View Post
AE can ajusts up to 40" tires... And you get one hell of a scan tool for free...
Agreed

Best bang for the buck!
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