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For those of you with Ford Performance ProCal4 tool

Dave2013M3

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Aug 22, 2014
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Location
El Segundo,Ca
Vehicle(s)
2020 Ford Mustang GT Base PP1
You should be able to access the menus. I was able to on my 2022 Ford Bronco Sport Badlands. I contacted Ford Performance and he said it would be able to adjust tire diameter as well as final drive up to 4.09:1.
This excited me as one of the reason I was holding off on getting an S650 is the 4.09s were a must from the get go. Totally transformed my S550 with the MT82D4. I am not sure if I want to do a tune again. Just do less weight, less rotational mass (Wheels), suspension work and some 4.09s make a great recipe.
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