Scalvini Factory Cone Pipe Each Scalvini exhaust is completely handmade and welded by a team of experienced artisans. In addition, Scalvini leads each project himself from initial testing, to finished production. This R&D process includes countless days of track and dyno testing to produce a product that meets our strict performance requirements. Scalvini exhausts don't just produce more power, but usable power and torque which insures faster lap times.