Yeah, its 100% possible when using the right equipment. No shady stuff involved. The modules Dynotest https://dynotestpro.com/ come with integrated mileage blockers designed for professional use. They freeze the odometer reading while you test cars performance, meaning you can do unlimited dyno pulls without logging a single mile. Its super useful for dealerships, leasing companies, or anyone protecting vehicle value. The blocker doesnt alter or erase data; it just pauses recording during the test. Once youre done, the odometer resumes like normal. Its a clean and reliable way to tune safely without extra miles showing up.