Had my ECU reprogrammed by myself, in only 7 minutes through my iPhone 15. Easy step by step process, and data logging/DTC reading has never been easier. Really woke up my B8 S4.

Anthony was very patient and informative before and during the activation process. It's nice to have features that are only software locked enabled. Since install a few weeks ago I haven't had much time to experience it as most of my driving is during the day, but a few times during a quick night drive it was interesting to see the light moving around other vehicles.

Chatted with Anthony about what i was doing and he suggested this particular harness. Easy order process and received the harness within a week (custom made) .
Thank you Anthony for making the process so easy.

Anthony helped me fully utilize the headlights in my 23’ R by activating the matrix feature with what he makes seem like some simple remote programming. However it is clear that if it were so simple that more people would be offering this service.

Also after I had to do a software update at the dealership, the coding that enabled my matrix headlights was removed. Anthony quickly made time to fit me into his schedule and restored full matrix function of my headlights.

Again, fantastic product and even better customer care

Anthony is was great on explaining everything to me how the lights work and the update was quick and problem free.
Amazing service will definitely recommend to everyone.

Worth every penny. ACM Technik is a very fair priced company that never disappoints. I highly recommend them