Tuned my 2022 330i B48, cracked my ECU quickly and correctly, and answered all my calls and questions. The car is running great. He’s 100% legit if you’re worried, I highly recommend him.

Justin provides great work and clear communication throughout the entire process. He completed a full unlock on my 2021 M340 and tuned my car in just 3 days. He is fast, efficient, and the work was done flawlessly. What more do you need? Hands down the best tuner!

Justintunes unlocked the ECU on my 2025 G80 M3. Everything was done at my convenience. My car never left my garage, and it was tuned the same day the ECU was returned. He was communicative, responsible, and helpful throughout the entire 3–4 day process. Highly recommended.