Article link: https://www.caranddriver.com/reviews/a38834286/open-flash-performance-2021-toyota-supra-30-by-the-numbers
In terms of speed, it's half a second quicker to 60 and in the quarter which is quite substantial. It appears to have stock like driveability as well.
Looking at the tuner's...
Bought my car used and it came with spacers. Would like to have the option of going back to "stock". If you have a set of stock bolts you don't plan on using, please DM me!