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Tune finally arrived and she works as it should now :) also ford performance has updated the description on the gears and have included it below. “ Requires aftermarket calibration if vehicle is not originally equipped with this gear ratio or a Ford Performance Power Pack Calibration” so if...

Update, tune is in the mail but while I wait. I decided to contact Fords head office. Needless to say, after a lengthy conversation they contacted Ford performance. They are sending the calibration files to my local Ford dealership. About 10 minutes after I get off the phone with Ford Canada, my...

this is what I am assuming is going on in my case. I am capped at 3.77 and the 4.09 is out of that range so causing problems. I cannot trick the car by changing tire size as going from 3.31 to 409 the tire size pushed it out of bounds same as the gear ratio wonder if setting it to 3.73 and...

Forscan will not work, it needs an update that the car will not receive unless it is a PP car. I tried forscan, will not work, tried the BDX tuner which has an option to change tire and gear ratios. forscan and BDX only works to change the gears, if it has the PP tune applied already. If I use...

sorry on my phone. All tuners that replied said to just take it to the dealer and they will flash it to accept the new gears. 2 of them said the BDX does not have the ability to update it correctly and the dealer should do it for no charge due to them not advising customers that it will require...

Update, contacted everyone that tunes for SCT devices and not one person said they could do it. They said that does needs to updated the programming and I should be good to go. Guess it’s time for a new tuner, Lund said they could do it no problem. So now I have to wait a week or two for the...

Going to 1st thing in the morning. Running 265 35 20’s which are 27.3” tall. Verified it is running 083C in forscan. Will try a 265 65 20 which will give me a roughly 3.33 gear. Which should be 0A1E will try from 726-12-01 014B-083C-XXX to 726-12-01 014b-0A1E-XXX

Thoughts? https://www.mustang6g.com/forums/threads/change-gear-ratio-3-73-to-3-55-in-pcm.103012/page-3

Thank you! is there any tool I can use to check the max gear ratio when connected to the car?

Not sure if u can open it but here it is.

will try and see if I can get the tune. with the BDX they are cloud based and not sure if I can pull it.

726-12-01 Stock 014b changed on the tuner and it changed to 0199 in forscan. took for drive, same problem. Loaded forscan change to 19A. same problem. Really stuck and don’t know where to go next.

Will do! Just getting really frustrated lol Just bought the car just over a month ago. Worked great, had the gears swapped from 3.31 to 4.09’s and now all kinds of problems :( is there anything I can check or try with forscan while I wait for a tuners response? thought this would have been an...

Tried both the canned tune from Brenspeed and a custom tune, even removed my cold air intake and flashed back to stock. emailed a few others and waiting for a response.

Procal tool is only able to adjust up to 3.73’s as it does the same as any tune. The BCM is still untouched. Located in Amherst Nova Scotia.

Talked to my tuner and communication is below. They cannot make the adjustments. I just had the 4.09 gears changed in the car and it is going into limp mode. Said no problem, must be due to not updating my can tune to account for the new gears. Updated the tune and took it for another drive...

From my understanding, tuners cannot change the BCM settings. Will shoot them a message and see their response.

Hello everyone, I have a little issue with my 2015 gt premium. Has normal bolt ons. Long tube headers Cat delete Off road x pipe Borla atak mufflers. JLT cold air intake I recently changed the rear end gears from 3.31 to 4.09’s. I have an SCT BDX tuner and was told that I could change the...