Hongqi, exhaust system tuning in Arara

Hongqi, exhaust system tuning in Arara.
The exhaust system is tuned mainly in order to increase the strength of the engine, which can be achieved by installing a direct-flow muffler and removing the resonator. Moreover, the tuning involves polishing of the manifold valves, installing a manifold with tubes, increasing the diameter of the pipe, and removing the neutralizer. The exhaust system tuning is a complex technical task that requires special skills and appropriate tools.