The '25s have a boost gauge for what it's worth (although its a relative scale with no units denoted). Obviously doesn't help with your '24.
I wouldn't sweat it. Just drive it and enjoy it. If the engine does let loose, know that you'll be covered and Lexus will address it.
Over the last 18months:
Correction to factory alignment.
Front window stopping halfway after LCDC due to dirty window track.
Front brake TSB.
Backup camera firmware update.
Driver-side catalytic converter.