You bring up a good point. Before, EGR was not disabled. It was on factory/stock tune. 600+ miles range.

When I flashed it to stage 1 tune, that one had the EGR disabled. ~400 miles.

When I panicked and flashed it back to stock, I left the EGR marker as disabled. Basically the car is on factory tune with disabled EGR. Still ~400.

Hmm, I'll have to flash the unmodified tune after a fill up and drive again.