Just back back from an amazing week at Beaver Bend. When heading in the RPM was around 4500, It slowly began to lose power, oil pressure was falling from 40 to 20, I put the boat in neutral and pressure jumped back up. easied into the dock and had a lot of exhaust smoke. Checked oil level was good, Temp never got up, started it again to rough idle and more smoke. Pulled plugs they are black little oil on them but they all look the same. Motor sounds unhappy but no bottom end knock etc.. going to check compression etc.. but I am not sure what kind of Injection module the boat has? or what sensor may control the injectors??