The performances of a fast boat are the result of very complex equations that are based on a number of factors. The most commonly known being the hull shapes, transmissions, propellers, weight and naturally engine power. But there are other parameters too often neglected by boat builders: engine combustion. All engines are pumping fuel from the tanks, burning a part of it, and unnecessary fuel is being returned to the tank after passing by the fuel pump. As a result, the fuel overflowed to the tank(s) gets warmer and warmer. It is no secret that an engine delivers more power and better combustion when the fuel is cold than when it is warmer. On some of our high-performance models, we install a fuel intercooler between the fuel pumps overflow valve and the tank to make sure that during long period of use, the fuel left in the tank doesn’t go up in temperature.