There are open-source projects in the automotive diagnostics and tuning space that can provide some level of functionality without cost.
Simplo Automotivo Crackeado
Simplo Automotivo is a software solution designed for automotive workshops and dealerships. It offers a range of tools for managing business operations, including vehicle maintenance records, customer database management, invoicing, and inventory control. The software aims to streamline processes, improve efficiency, and enhance customer service. Simplo Automotivo Crackeado