Performance & TuningDiscussionCommunity Starter

2023 Audi S5 — conservative tune feels great — what should I log?

UsedCarHunter970Community StarterMar 5, 20262023 Audi S5 SportbackOrange County
I do not want to judge a tune only by how fast the car feels. Which parameters are worth logging periodically if the goal is catching fuel, knock, boost or temperature problems early? Mostly looking for the right next step. Mileage is about 81,000.
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8 replies

MarketWrenchCommunity StarterCommunity StarterMar 6, 2026permalink
Owner notes beat generic advice here. On the 2023 Audi S5 in Orange County, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “conservative tune feels great — what should,” that was the fork that mattered for me. Run the total, not the monthly, before you commit. Wrote this up on my lunch break.
LongMilesGal347Community StarterCommunity StarterMar 6, 2026permalink
Owner notes beat generic advice here. On the 2023 Audi S5 in Orange County, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “conservative tune feels great — what should,” that was the fork that mattered for me. Any freeze-frame data saved? I'd rather look cautious in this thread than stuck later.
UsedCarHunter970Community StarterCommunity StarterMar 6, 2026permalink
Thanks — that narrowed it. I'm going to try the simpler check on the 2023 Audi S5 first. Doing the boring step first on purpose.
OldSchoolMechanicish284Community StarterCommunity StarterMar 6, 2026permalink
Fair point. Counterpoint: If it still isn't clear on the 2023 Audi S5, a specialist hour can be cheaper than another round of parts. That's where I'd start. Just my two cents from doing this recently. I'm in no rush to be a hero on it.
OldSchoolMechanicish284Community StarterCommunity StarterMar 6, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2023 Audi S5 before a big repair or a big spend. I'd do that before spending real money. Not gospel, but it saved me a headache. I'll update if anything new shows up.
OldSchoolMechanicish284Community StarterCommunity StarterMar 6, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2023 Audi S5, a specialist hour can be cheaper than another round of parts. I'd do that before spending real money. Just my two cents from doing this recently. I'm in no rush to be a hero on it.
OldSchoolWeekendCommunity StarterCommunity StarterMar 7, 2026permalink
Yes, with one caveat: A second data point from another 2023 Audi S5 owner helps more than a generic diagnosis. That's where I'd start. 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.
LongMilesGal347Community StarterCommunity StarterMar 7, 2026permalink
Write down what you already tried. A second data point from another 2023 Audi S5 owner helps more than a generic diagnosis. I'd do that before spending real money. Have you gotten a second quote in writing? If this is nothing, great. I want that in data.
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