Another key item and the basis of any exhaust system design is the type of engine and its specific back pressure requirements. Besides the specific engine requirements it is clear that in the end, any additional mbar of back pressure will cost you power and fuel consumption. Already for decades we use our proven and constantly evolving software to calculate the flows and backpressures of your complete exhaust system. For the yacht market we have developed some special items as guided short bends and Y-pieces, to fit into the smallest engine rooms. Special attention is required, when an underwater outlet is applied. To reduce the back pressure caused by the underwater outlet we design and manufacture scoops. Whenever applicable, the scoops are an integrated part of the complete yacht exhaust system.