Knowing the turbo impeller speed is a great thing to have available. That's going to be a huge number, and the folks with this car need some sort of huge number that isn't the cars weight.
Jeff is just like this online. In-person, he absolutely loves talking- especially science stuff. I chalk it up to him being incredibly busy and the number of messages he gets. He'll get chatty from time to him.
The recall is from mid-last year. https://www.viscontituning.com/pages/toyota-supra-recall-update-infomation
Are you the first owner of the car? If it was used, the original owner could have gotten recall notifications and either ignored them, or intentionally didn't do it because they didn't...
Yeah--- to put in guaranteed "good" E is expensive. The E I filled up with today is Ignite Orange- right outta the barrel. ~$7.50/gallon. Ignite Red is ~$12/gallon
Botti is easier to convince that you want to push it than payn. Botti assumes if you say, 'push it' you mean, 'push it- I'm fully aware that at any time that means my rod can fold in half.' Jeff will do it too, but you really have to convenience him to do it.