Pulse Air Valve System
The pulse air valve replaces the air pump on some thermactor systems. It uses a pulse air valve instead of an air pump. It permits air to be drawn into exhaust system by vacuum created by exiting exhaust pulse.
Natural pulses present in the exhaust system are used to pull air into exhaust manifold through a pulse air valve. The pulse air valve is connected to exhaust manifold by a tube, and to air cleaner by a hose. This allows fresh air to complete oxidation of exhaust gases and blocks backflow of high pressure exhaust pulses.