Fully agree. Unfortunately the AMS EcuTek Custom Tune does not alter transmission programming. According to my local tuner the Z's auto trans tuning is not accessible though may be in future.
I've owned a 370z Nismo standard and a R35 GTR and find the Z Nismo adequate. It works, is a bit flakey, but my choice over a standard. It's fast and fun.!!! 💪🤓👍💯
I've got all four Dunlops available to sell to you with less than 1,000 miles on them. Went with Micheline's on my Nismo.
Also, regarding front or rear sets changing, not all four, it depends on traction variance between front and back, where wear should match as close as possible between...
I haven't critically assessed shifting yet, but will today and report. Though, the gain is amazing! Theses cars have such potential. The tires will not only spin in 3rd, but in 4th now, and "bat outta hell" term comes to mind. I just need to sort chart vs. actual yet, but seat of my pants says WOW!
Update:
My summary of AMS response to my tuner...
Hi Dave,
I spoke with AMS to get data logs. All good.
Also, Derek there clarified that I have 4 modes. 2 at 91, and 2 at 93 octane, and the key differences of each, particularly boost settings.
Additionally, he walked me through the EcuTek...