[Trochoidal]

Originally Posted by f.d

E xactly king


Now i do have in the car : New Unlocked TCM from HP tuners . And i did Transmission tune today 2 times and no DTC’s. Thankfully

Here the preceder to swap from (Stock TCM) to (New Unlocked TCM).

- Must have internet

- Be sure you did delete the file/files we did talk about in previous comment.

Now stock TCM in the car and we will start from here:
Be sure there are no DTC’s , like a new car, or like you changing the TCM first time.

- open VCM scanner beta, put MPVI2 in the port, now ignition on , connect the car to VCM scanner.

- start the preceder to change TCM , question come: is the stock TCM in the Car (answer yes).
Next ... ok.

- discontent the car, ignition off, remove the MPVI2 from the port, remove battery cabel.

- Put the new unlocked TCM in the car , put battery cable back, put MPVI2 in the port, ignition on, connect the car to vcm scanner beta.

- start the TCM swap preceder, question come:

Is the Stock TCM in the car now (answer No ) and follow to the end.

- write/ flash the (first original file you did read , The file you did not make any tune).

Now it must stock car with unlocked TCM.

- Disconnect the car from VCM scanner beta. Ignition off, Remove MPVI2 from the port. Start the engine , put the transmission on D , N ,R , P ( Be carful if the wheel not in the place).

- Engine off

- MPVI2 in the port , ignition on , connect the car in vcm , Read DTC’s

No DTC’s

,

From here you can tune the transmission, but put in your mind ( do small changes in the tune) and write the file to the car. And after 100-200 mil du new small changes.

There’s a history file. And the transmission have hard shifting with big changes.

Just do small changes

Hope i did something useful for you all

I feel the person helping you is more detail oriented to small things. I haven’t sent my TCM in and have been delaying it because I’d prefer to purchase an unlocked TCM. Personal preference.

CMITCHELL17 was the first post I read where new unlocked TCM swap caused codes. KILLABEE had issues too. Others have also posted here as well as HPT forums with issues. Maybe I missed a post someplace where someone successfully swapped a new unlocked TCM without getting codes, but again, I don’t recall reading about that happening.

However your posts outline specific internet connectivity where HPT USA doesn’t mention that step.

You sure did something right and have results with a successful swap and no DTC’s.

For that reason I responded yesterday outlining what you had done because it sure appeared you were going to post another procedure with good results.

Thanks for sharing!