Is the only change for the 7AT via tuning, increasing the line pressure?

 

I don’t have an answer for your question but after I got my car tuned it shifted a lot faster/smoother if that helps you at all 🤷🏻

 

There are some tables in Uprev that can cause the transmission line pressures to increase. Not to sure about ECUTEK.

 

I believe same thing applies in ECUTek

theres not much TCM tuning you can do in the first place, very little tables within the ECU, basically just small things to help shift sooner, not quicker but "sooner".

I installed the grounding kit and saw improvements too, always helpful.

Few people also installed a built VR30 7AT retrofitted into the G37's. Its possible but requires some work, and noticed more solid shifting