Hi, please could you have a look at an msq for me, I have fitted a 97 4.6 sohc npi engine in my boat it has 19lb injectors, pi cams,cold air intake, open exhausts running 95 octane unleaded, as its in a boat its always under load so tends to be above 60 kpa load unless on idle! it does perform quite well but at constant cruise seems to be a bit lumpy. I have tried using wb sensors but they seem to die within a couple of hours of startup! I can only assume damp air must be getting sucked down the pipes once the engine has stopped. If i can be confident of a good timing map i can work on the fuel but not knowing either makes the job difficult. many thanks.
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