2021 BMW X5 — conservative tune feels great — what should I log?

Write down what you already tried. A second data point from another 2021 BMW X5 owner helps more than a generic diagnosis. I'd do that before spending real money. This is from a 2021 BMW X5 in Raleigh with 77,000 miles. If they can't show the line item, I assume it's hiding. Not trying to scare you — just skip the expensive first guess. Might be overthinking it, but I'd rather overthink than overspend.

I parked the 2021 BMW X5 and wrote down what I already tested so I'm not repeating myself. If the story changes I'll post the new data.

I'd keep this practical. Verify the cheap/easy branch on the 2021 BMW X5 before a big repair or a big spend. Then you'll know the next fork. This is from a 2021 BMW X5 in Raleigh with 77,000 miles. I'd want that in writing, not as a promise. This is me being the wet blanket on purpose.