FYI for premium audio cars the high quality stream option is now at the login screen for Slacker. The high quality feed option was removing from all base audio cars in 8.0. I asked Slacker support to pull log data to see what my car was asking for, and it was AACv2 40kbps. They might as well disable Slacker in the base audio cars.
Also, any claims that changing the feed quality in the web player are incorrect. There is no link whatsoever here. That is a local setting stored in a cookie or something. If you go to another browser or a phone app you'll have to change it again. The car picks the feed quality and format.
I'm streaming Slacker now via bluetooth and is sounds perfectly fine.
If you're a base audio owner and upset about Tesla crippling your Slacker feed, please email
[email protected] and let them know.