Post here if you are, and your country and approximate location if you can.
Edit: I didn’t want to make the post subject pedantic and need a [serious] tag, lol.
E2: ok, looks like a local hiccup for that station. Kinda on edge, there are going to be shortages. Just don’t know when. Gas here is hitting $4/gal at some stations. Mostly close to $3.90 at the rest. We were paying $2.65 when this started.
Turbos can and are very often used to increase efficiency. You’re extracting waste gasses to compress air and overall it’s a net gain. Especially if it’s being run at more constant load, such as highway cruising or charging an EV battery.