The intricate baffling in the MP muffler creates additional mixing of the water inside the exhaust line, which results in better noise reduction.
In spite of all the baffles, the construction of this muffler causes almost no resistance to free flow of the exhaust gases. Synthetic material - completely corrosion-proof 40mm Vetus hose for the MP40 is available - see our Order# 156482 In the image shown, the inlet is on the right side and is marked on the muffler