Needed a bench unlock on my X3 M40. He came through last minute. Very fast and excellent work.

Justin was great. He drive an hour out and coded my steering rack for me on my Supra. Highly recommend.

Fast and easy services. Would HIGHLY recommend, booked last second but got me covered in less than 3 days.

Quick and easy, had it done in under 20 minutes. Very nice and energetic. Love the tune and how my car is running.

I called him last minute for an ECU brick unlock. Never heard of him, but he got it done in less than 5 minutes. Highly recommended.

Great customer service. He walked me through the whole process of tuning my car, and I’m in a different country! Would highly recommend.

Justin is a real gentleman. Took care of me on short notice for an unlock and Stage 1 on my M340. I highly recommend him his skills and knowledge are top tier!

Very communicative and an amazing experience. I would recommend Justin and his services to anyone who needs what he offers. Outstanding customer service 10/10.

My brother, man Justin. Always hooks it up when necessary. Best bench unlocker and tuner around. He’s also very responsive and pays close attention to detail. 10/10!

Thank you so much for your help. He helped me tune my car back to stock, which was giving me issues and was not turning on. I will definitely be using him for my next builds.

Tuned my ’22 330i B48, cracked my ECU quickly and correctly, answered all my 1,000 calls and questions. Car’s doing great. He’s 100% legit if you’re worried, highly recommended.

Nothing but A+++++++ service. Didn’t hesitate to help me out. Walked me through the whole process of getting the car tuned. Would recommend over and over again hands down the best!

Best tuner around, point blank. Hands down the quickest turnaround time. Very knowledgeable on whatever tune you’re looking for. Going back to Justin once I do a couple more modifications.

Justin came on very short notice and drove about an hour to my house on a Sunday afternoon. Super professional and friendly guy. I would 100% recommend his services and will definitely be using him in the future.

Came out on an off day to help me. Justintunes got an ECU unlock plus a flashed Stage 1 tune for my F15 X5 35i in under an hour. Fairly priced and easy to work with. I 100% recommend him he’s helpful, reliable, and knowledgeable.

Justin provides great work and communication when working with you. Did a full unlock on my ’21 M340 and tuned my car in 3 days. He is fast and efficient. Work was done flawlessly. What more do you need? Hands down the best tuner!

Payment may be for a one-time service, but the friendship and reliability you get are lifetime. I worked with Justin back in 2023 when I first got my car, and he’s still on speed dial to help me tune and code my car in 2025. Highly recommend his service to everyone.

Justintunes unlocked the ECU on my ’25 G80 M3 in record time. Everything was done at my convenience, my car never left my garage and was tuned the same day the ECU returned. He was communicative, responsible, and helpful throughout the short 3–4 days it took. Highly recommended.

Hands down the best tuner I’ve worked with. Justin unlocked and tuned my 330i, and the difference is insane. Power, response, everything feels completely transformed. He explains every step clearly, no guesswork, no BS. A real professional who actually cares about the car and the customer. If you need a safe and powerful tune in NYC, Justin is the guy. 100% recommend.

Justin is one of the best tuners in the industry!!! If you want a coder/tuner that you can rely on, look no further. Justintunes is your go-to for it all!!! He helped me get my custom tune for my F30 B48, which he normally doesn’t do for Gen 1 models, and even helped me relock my DME after an accident. Thank you a billion times, my brotha. I appreciate your patience and help with this! Now let’s make a movie with this F8X.