2013 Speedometer Recalibration After Gear Change - Mustang Evolution

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Old 07-31-2013, 06:12 AM   #1
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2013 Speedometer Recalibration After Gear Change

I have a 2013 GT Premium Convertible 6-speed with factory 3.31 gears without any kind of tune. I want to install 3.73 gears and know that the speedometer has to be recalibrated. Problem is I've contacted five local dealers. Three told me that Ford has the computer locked and they cannot change the ratio (can that be?). One told me that they "might" be able to make the change but wouldn't but wouldn't know for sure until they put it on the machine. The last dealer recommended a local "tune" shop. Suggestions will be appreciated!
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Old 07-31-2013, 07:49 AM   #2
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I suggest you tune it with a tuner from AM or etc... And then go to the dealer who suggested a tune shop for any work on your car... Because you can do your mods such as gears and if they try to void your warranty you tell them they told you to tune it... Good luck... BTW if you buy from American muscle the have free tunes for life
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Old 07-31-2013, 09:02 AM   #3
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Quote:
Originally Posted by Old Sailor View Post
I have a 2013 GT Premium Convertible 6-speed with factory 3.31 gears without any kind of tune. I want to install 3.73 gears and know that the speedometer has to be recalibrated. Problem is I've contacted five local dealers. Three told me that Ford has the computer locked and they cannot change the ratio (can that be?). One told me that they "might" be able to make the change but wouldn't but wouldn't know for sure until they put it on the machine. The last dealer recommended a local "tune" shop. Suggestions will be appreciated!
3.73s are an option from the factory, any ford service shop will be able to do it. I personally would have ford do it to retain your warranty.
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Old 07-31-2013, 09:50 AM   #4
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You need to either find a FRPP or Roush dealership (they should be accustomed to these kinds of changes) or get an aftermarket tuner.
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Old 08-01-2013, 05:41 AM   #5
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Thanks for the suggestions!!!
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