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On plastic 6 gallon tanks already . I’ll check intakes . Thanks for the advice . It sat for a year I thought going through both of the vts would fix it . Also checked all coils on both motors and there good .Check fuel lines (so run from a separate fuel tank to rule out lines and tank pickup).... And check for nests in the air intakes!!
(If they're both acting the same there probably has to be a common issue which, to me, points at the fuel supply)
Yes, because if the boat will not behave in the xpected manner one’s mind goes to the engine.Does your boat live in the water. Most common cause of both engines low on rpm is a dirty hull and props. It doesn't take much to cause a lot of drag