If I get gears installed by a shop or dealership will they re calibrate and tune it for my auto.

Also if I get a bama tuner and install a tune but later have to put it back to stock tune will I still be able to drive accurately with the 3.73 gears or will the tuner put it back to the original stock tune when I had 3.15 gears.

I'm just hoping someone can help me with this questions.

 

Shop should be able to calibrate. My place charges $50, but I had a tuner so didn't pay extra.

If you put it back to stock after using a tuner your speedometer will be off. Hope that helps, good luck.

 

So if I have to take it back to ford would it be better to just leave the tune on

 

I've heard others say that Ford will only be able to recalibrate your speedo if the gear choice you swapped to was an original option for the car. If the case of the Auto, it only came with 3.15's, no options.

 

I have an SCT tuner with my VMP tune and was able to change the gear ratio when I changed my gear recently by simply selecting the appropriate ratio in the options menu.

 

I'm not sure if the dealer will be able to recalibrate your PCM for you. Your best bet would be to give Ford a call and ask!

We can definitely adjust for your new gear ratio within the tune, if you get a Bama tuner! Besides adjusting your speedo you'll notice huge improvements in Power, Torque, Acceleration, Drive Ability, Gas Mileage, Shift Points (If its an Auto) and so much more!

I hope this helps! Please let me know if you have any questions or need some assistance. Our Bama Performance tuning specialists are here in the building Monday-Friday from 9AM-5:30PM EST and Saturday 9AM-5:30PM EST. You can hit them up directly at 888.226.9764 and they'll get you squared away!

-Dan

 

Does that mean the bama tune will re calibrate the speedo in the tune.

 

Yes, more or less. As long as you give American muscle the correct rear gear and rear tire size you're running, your speedometer will be corrected after the BAMA tune is loaded.

 

Yes, this is correct.

-Dan

 

I recently has my 3.31's swapped out for 3.73's. I called my local Ford dealer and told them what I did and that I needed my speedo reset. They did it in about an hour. I did not do any tune to my car. So it was just a matter of Ford changing the gear ratio on the car's computer.

 

What made you chose the 3.73 for the auto. I have an auto also and looking for some gear. Thanks

I know the 3.73 is what the manual guys are going with.

 

Not all of us. I started with 3.73's and went to 4.56's. Over at the S197 Forum website they have a 1/4 mile drag list of the fastest 5.0L's and the quickest all-motor 5.0's run 4.56 and 4.88 gears. My last Mustang was an auto (07 GT) and I ran 4.10's quite successfully. Despite the new 6R80 auto having a steep 1st gear, more gearing is definitely worth doing, IMO.