Aftermarket automobile engine exhaust systems comprised of indicate the components, e.g., pipes, collectors, mufflers, particulate traps, etc; Automotive exhaust pipe; Engine exhaust system comprised of a particulate trap; Exhaust manifold for engines; Exhaust pipes for land vehicles; Exhaust silencers for engines; Exhausts for motors and engines; Headers as part of vehicle exhaust system; Intake and exhaust air flow vane assembly device for use in an internal combustion engine