Assuming stage 1 on average is around 18% increase in power (Pump gas)
2020 Supra (330whp stock - 389whp tuned)
2021 Supra (370whp stock - 436whp tuned)
Pure speculation off course but I do think that the 2020 avg increase percentage of 18% will be harder to achieve in the 2021
Time will...
Yes burbles on the base OTS map are less aggressive than OEM
I have a full exhaust installed and it was silly loud before so I prefer the less aggressive OTS settings
If you have a catless downpipe you can adjust them using the BM3 app ;)