Hey guys I'm new and looking for some help. I bought a 2014 GT/CS last November and changed rear gear from 315 to 373. So I know this has my speedometer reading incorrect and putting more miles on it than I'm actually driving. The dealership told me they couldn't do anything to fix it. Any recommendations? Thanks in advance.
Newby needing help!
- Thread starter 660mom
- Start date
nyuk98gt
15 Year Member
660mom,
I am pretty sure that the dealership could do something about it. Is there another dealer in your area? A call to the (new dealer's) Service Dept. will tell you pretty quickly if the rear gears can be addressed in a vehicle reflash. Seems to me that all they need to do is look up the calibration and find a similar PCM calibration that has 3.73:1 gears. My 2012 came with 3.73's so Ford certainly had a calibration for it and that was two years before your car was born, lol.
Another option is to get a tune (by a reputable tuner). The downside is cost: $400 for the handheld device and $150 to $200 for the tune. But you won't be putting ghost miles on the car.
The last thing that I can thing of is to find an "HP Tuner" dealer who might be able to do a simple 'gear tune' without having to marry a handheld device to your car.
Please post an update when available.
HTH,
Chris
I am pretty sure that the dealership could do something about it. Is there another dealer in your area? A call to the (new dealer's) Service Dept. will tell you pretty quickly if the rear gears can be addressed in a vehicle reflash. Seems to me that all they need to do is look up the calibration and find a similar PCM calibration that has 3.73:1 gears. My 2012 came with 3.73's so Ford certainly had a calibration for it and that was two years before your car was born, lol.
Another option is to get a tune (by a reputable tuner). The downside is cost: $400 for the handheld device and $150 to $200 for the tune. But you won't be putting ghost miles on the car.
The last thing that I can thing of is to find an "HP Tuner" dealer who might be able to do a simple 'gear tune' without having to marry a handheld device to your car.
Please post an update when available.
HTH,
Chris
SpartaPerformance
10 Year Member
The only way the dealer can help you is if they can change gear ratio using "As built Data" which means using the IDS (Ford diagnostic tool) to actually access code interface and manually program the gear ratio. I don't recall if that particular feature can be altered but you need to find a dealer with a tech that is willing to do so and then unfortunately you may have to pay the labor time even if the parameter can't be changed because the tech will have to go through a rigamaroo to see if he/she can or can't alter it. In my opinion your best bet would be to get a hand held like an SCT XCal4, the user interface is ridiculously easy and you can you can alter gear ratio yourself and it comes programmed with most of the most popular cold air intakes so you can add a bit of power yourself if you upgrade in the future
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