Performance Upgrades
Wholesale, Dealer, & Trade
About Viezu USA
Your One-Stop Shop for Professional ECU Tuning
Viezu USA is your US-based source for professional ECU tuning tools, car tuning software, and dyno-backed remapping services. We stock and support KESS3, Autotuner, and Magic Flex — the industry's leading ECU flash tools — with same-day activation, US pricing, and real technical support in your time zone.
Whether you're a shop adding ECU tuning to your service menu, a mobile tuner scaling your business, or a dealer looking for a reliable tuning file service, we have the tools and training to back you up. Authorized US dealer for Viezu Technologies — 1,250+ dealers worldwide, now with local US support.
Get Answers Fast with the Viezu Chat Bot
Have a question? The Viezu Chat Bot can answer many common questions, from tuning options and tool compatibility to training courses and dealer and wholesale info. It can also help you find your way around the site, so you spend less time searching and more time getting the information you need. Whether you are a first-time visitor or a long-time tuner, it is a quick way to get pointed in the right direction.
The chat bot is there to help throughout your visit. It can point you to the right product or tune page for your vehicle, explain the options available to you, and guide you to request a quote or to the dealer portal. When your question needs a personal touch, it can hand you off to a live member of our team.
Ready to get started? Just tap the chat button in the bottom-right corner of the screen and ask away.
Everything you need, in one place
Remote tuning for supported vehicles, including customized tune files
In-house tuning support for customers who prefer a local, hands-on solution
ECU/TCU programming tools and professional-grade equipment for shops and serious DIY users
Dealer program support for businesses adding tuning or scaling an existing tuning operation
Professional File Service: Access calibrated files through our credit-based system— for consistent results and quick delivery.
Training and education through hands-on and online options to build real capability—not just quick wins
