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The supplementary trumpet intake needs when there’s an engine or gearbox preparation. We can compare the engine to a suction pump, if this pump sucks 10 m³ of air per minute and runs with x revolutions per minute, we cannot pretend nor whisper that setting before a trumpet, sucks more. But if we make the pump running not to x revolutions but to y revolutions happens that the air inlet, that was projected for, results obstructive(small).In this case we apply our additional trumpet and that’s it. In some other cases taken into examples, we have seen that filter’s boxes haven’t a sufficient capacity for a good engine respirator. This is not for the lack of information of the manufacturers , but because they have to set it in the remaining available space, after having set the engine, the radiators, the intercoolers, the abs, the several water cisterns, motor oil, windshield washer liquid, etc and the space left is for the filter’ box.
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