Just found the time to play around with a little transmission coding today. I wanted to see if I could get a transmission that didn't shift in manual, like they used to be.
I wanted to try Mark'sA8L suggested coding of 00032 or 00022, but my car didn't accept any of these.
I then tried 00131, which it accepted.
And behold, it now behaved just like my old A8 sport! :-)
- No upshifts at redline, just hits the limiter (even in 1st).
- No downshifts at kickdown
- Only automatic downshift at very low rpm, actual rpm depending on gear. 5th at ~1000, 4th at ~900
The behaviour is the same if manual mode is selected by tip buttons or by gear selector. No difference between "D" and "S" mode in this respect either, but "Manual S" mode seems quicker than "Manual D", like before. Selector in tiptronic gate acts just like "Manual S" when it comes to shifting time.
Just for the fun of it, I recoded to 00121 also. Didn't notice any difference from 00131, but it came four inches of snow today, so road testing was somewhat limited by slow non-quattro vehicles.
The soft code in my car was 00101 before I changed anything. After googling a bit, I believe this means:
xx1xx: DSP engaged
xxx0x: New model tiptronic shift strategy
xxxx1: Region: Rest of world, quattro
In other words, changing the xxxYx toggles between old and new "tiptronic shift strategy"
xxx0x and xxx1x is the new behaviour (semi-automatic tip mode)
xxx2x and xxx3x is the old behavior (manual tip mode)
This link confirms that this is the case for the A4: