I've searched & tried every variable of trans/speedo tune to eliminate tcc slip. This is a customers stock car. I was out of edits,had hp in the mail & had to farm out to another shop for trans cal with edit. I saw the issues with possible edit corruption had dealer flash to stock 2.73 cal said he couldn't or wouldn't set up for 3.15. I then should have had a virgin base to hp & am lost wtf this shouldn't be this difficult. I would greatly appreciate any help with this. The slip is always same rpm vs spd throttle on or off must be bs input vs output rpm, but nothing seems to change it. eventually sets 1870 code.