6 Speed Auto Transmission

[Sk7blue]

Hello,
I own a 2017 mustang gt 6 speed auto trans. Im posting this because I couldn’t find an answer to my questions. After i tuned my car a a very known place, my trans started shift weird. Especially 3-4. I went to so many tuners no one could help and told me that nothing is wrong with my trans. After all efforts, I went to the dealer ship and the car was diagnosed then they told me my trans needs a rebuilt however im pretty sure that the issue is not with the trans because this car is only 50k miles and has never been in a race. Can anyone help to address my issue. Thank you.

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[Jackson1320]

Hello,
I own a 2017 mustang gt 6 speed auto trans. Im posting this because I couldn’t find an answer to my questions. After i tuned my car a a very known place, my trans started shift weird. Especially 3-4. I went to so many tuners no one could help and told me that nothing is wrong with my trans. After all efforts, I went to the dealer ship and the car was diagnosed then they told me my trans needs a rebuilt however im pretty sure that the issue is not with the trans because this car is only 50k miles and has never been in a race. Can anyone help to address my issue. Thank you.

What do you mean by weird?

 

[vanquishvzla]

go back to stock tune and compare... if everything is smooth, the problem is the tune....

my canned sct x4 tune was GARBAGE... i hated how the transmission was shifting... specially down shifting... but after the PBD tune, now i love it...

 

[Sk7blue]

What do you mean by weird?

Im trying to post a video but its not working from my side.

 

[Sk7blue]

go back to stock tune and compare... if everything is smooth, the problem is the tune....

my canned sct x4 tune was GARBAGE... i hated how the transmission was shifting... specially down shifting... but after the PBD tune, now i love it...

I went back to stock but i have the same issue with the trans. I don't know is it because that Im full bolts on on a stock tune.

 

[Rapid Red]

How can a tune affect a manual trans ? Shifting & gear set is input from the driver ?

I'm lost

 

[Sk7blue]

How can a tune affect a manual trans ? Shifting & gear set is input from the driver ?

I'm lost

Mine is auto

 

[Emilbadal]

What’s the weird behavior you’re experiencing? Usually when you install a new tune, it takes 2-3 days for the ecu to learn how you drive and how it should modify its operations. Mine shifted super hard when I flashed my MPT tune to the point that I was concerned that something would break in the drivetrain, but after 3-4 days it calmed down and shifted properly. Oh btw, it seems that Drive and Sport have their own profiles and relearn period ,Afaik.

 

[Sk7blue]

What’s the weird behavior you’re experiencing? Usually when you install a new tune, it takes 2-3 days for the ecu to learn how you drive and how it should modify its operations. Mine shifted super hard when I flashed my MPT tune to the point that I was concerned that something would break in the drivetrain, but after 3-4 days it calmed down and shifted properly. Oh btw, it seems that Drive and Sport have their own profiles and relearn period ,Afaik.

Thank you. I just updated my tune i will wait and see.

 

[K4fxd]

If it's doing the same thing on the stock tune, your dealer is probably correct.

I learned to tune myself because everytime I bought a tune the trans would either flare the 3>4 shift or knock my fillings out on the 1>2. Usually both this even after giving it enough time to "learn"

The way I tune my trans now is to adjust the adaptive slip timer so the trans adjusts itself to a firm quick shift.

 

[Rapid Red]

Mine is auto

My thinking is off, saw 6sp thinking he was manual ..

 

[Dominant1]

Op still has not defined “weird” .. 3&4 shifts are very different from 1&2. What are the shifts like when you use the paddles?

 

[Sk7blue]

Op still has not defined “weird” .. 3&4 shifts are very different from 1&2. What are the shifts like when you use the paddles?

3 to 4 it Flares

 

[Dominant1]

Not familiar with the term “flares” please elaborate...

 

[K4fxd]

The engine will rev up between the shift. Very hard on clutches.

Basically they release the off going clutch before the on going clutch can take the power. Another problem I have seen from tuners is they will hold the off going clutch too long. That acts like putting on the brakes between shifts.

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