I've been looking at the TCC tables for a while but have yet to modify them.

I have tuned my car to have a really nice lope in P/N, but to idle smoothly in drive (drive rpms are +/- 20 rpms)

This prevents the annoying surge on the brakes while stopped.

I was looking at the A8 operating manual and noticed a section called Idle slip (I believe). I noticed for TCC pattern 5 (Normal mode), 1st gear has 850 rpm for the slip > lock function.

Would raising this to say 950 rpms allow the convertor to slip more in drive and alleviate the surge?

My best lope occurs with a target idle of 800 and I then use the airflow torques to swing the rpms from 750 to 850. It appears the 850 may be bumping the Lock function of the TCC pattern and causing the surge.

What do you guys primarily tune in the TCC pattern..... slip > lock only?