Tunex Complete Car Care specializes in automotive performance. Our dedicated technicians work hard to stay up to date with automotive trends and standards so we can provide comprehensive, bumper-to-bumper mechanical and electrical diagnostics for all vehicle makes and models. Tunex Complete Car Care specializes in automotive performance. Our dedicated technicians work hard to stay up to date with automotive trends and standards so we can provide comprehensive, bumper-to-bumper mechanical and electrical diagnostics for all vehicle makes and models.