Absolutely great service! My ECU was completely bricked and basically a paperweight, and he managed to bring it back to life and get everything running perfectly. He was very helpful, friendly, and took the time to explain what needed to be done. Even though the car was giving us a hard time, he stuck around and worked through it until everything was sorted. Turnaround was quick and the whole process was stressfree. Highly recommend to anyone needing ECU repair or programming!

Best tuner out here. He explains everything very clearly and provides every detail, keeping me updated through every step of the process. Even with a 48-hour ECU unlock turnaround, he stayed on top of everything. He also showed me how the bootmod3 app works, and the best part is that whenever you need him, he’s there to help you out. Highly recommend Justin. I’ll definitely be working with him more to make my M340i faster.

Top-tier tuning service, no doubt! From ECU pickup to install and tune, the entire process took less than 48 hours. Justin updated me every step of the way, walked me through everything, and was always just a phone call away for any questions I had. Amazing communication and knowledge definitely recommend to anyone local looking to get their tune done!

First off, amazing communication and reassurance, no questions go unanswered. This was my first time getting my G20 330i tuned, and just from the conversation and the professionalism in the way everything was handled, Justin gave me full confidence to trust him with such a major project. Thank you.

I can’t say enough about how great of a tuner he is. Super professional, responds quickly, is available to travel to you, and is extremely knowledgeable he can explain everything you need to know. If you have a BMW you’re trying to tune, Justintunes is the guy for the job!

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.

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!

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.