For sure, it's an expensive gamble. For me, I took my car from the dealer to the tuner on day 1. We actually found some factory issues like turbo hoses disconne

For sure, it's an expensive gamble. For me, I took my car from the dealer to the tuner on day 1. We actually found some factory issues like turbo hoses disconnected. Then I replaced a few parts for compatibility and performance and tuned it Stage II. That was 6 years ago and car still runs A1 (and I drive it like I stole it). Never brought it in for servicing.