Do you have HP Tuners? Can you post a copy of your tune and log files?

 

I have that combo in my 07 Tahoe well 09 ecm /os. My trans was fresh and rebuilt with all the goodies and did that until I got the tune worked out. I found mine was extremely finicky and had to lower the shift rpm and mph a lot below what I wanted to hit target. My truck revs quick enough that when it commands the shift the lag was making it over rev. I bet I can make that setup work correctly with some tweaks to the tune but need hptuners. I have done a lot of high power zl1/Ctsv setups and this is common to the a6 stuff.
I don’t know what my truck makes for hp bit on 14 psi and e70 I was able to beat an m3 up to 100 where he finally started to come around me and by 130 he only had a little over a car. On 93 and 10 psi setup it still can run low 12s 113 mph on my dragy and it’s a heavy 4x4 z71. It’s probably at least 100whp more on the ethanol and higher boost and that’s where I fought the shifting problem. So the higher the hp the more you have to play with tables to make it work. .