I’m running the Phearable tune, and it’s true that any modifications to your car require a revision. I had a minor hiccup with a flex-fuel tune, but they responded promptly, and addressed the issue. Overall, I highly recommend Phearable.
Jester Tuning is also fantastic based on my experiences and what I’ve heard from others. I had a question, and they provided a thorough and insightful answer. I appreciate the technical expertise this company offers—it felt like I was talking to a friend rather than just someone online. Jester Tuning also has strong community support, from what I’ve seen. I highly recommend them as well!