I want to upgrade my gears to 3.55, but I do not want to have to send out my TCM. I tested out changing the ratio in quick adjust settings, and it seemed to work: 1) the trinity said that "the gear ratio were successfully changed"; and 2) my car was put into limp mode (I could not get out of 2nd ...

well.

i have EXACTLY THE SAME ISSUE.

I have an australian delivered 300 srt8 2012.

i tried to write the 93 tune and it failed due to the write fail message. then it went to try to reinstall the backup which kept failing and going on in a loop until randomly it completed somehow.

unfortunately ...

i have the same problem but my car does not run anymore.
the trinity backed up my original backup and i picked the 93 oct. tune to upload, it made it through the key cycle at the end. then i got and error message (pcm error ctrl resetting) write fail (-18)

the trinity wanted me to upload the ...