If you have seen any of my content before you know for performance vehicles I like to measure how loud they are. It is all part of the theater of the vehicle. You expect noise, pops, and bangs.
I do the same with the 2020 Toyota GR Supra. I measure the exhaust start up and idle then in Normal mode at 3500 RPM and Redline, then Sport mode at 3500 RPM and Redline.
For the numbers your going to have to check out the video above. Enjoy!