Which EFI system would work best/be the most simple
#11
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iTrader: (5)
#15
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not floating,thats a bad thing for the ecu and sensors,,he means a different solid ground point and usually have it go back to the battery terminal.ground loop noise is always a problem w/ high energy ignitions,just trying to keep that noise in check.
#16
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Separate by not putting any of the EFI or ECM ground wires on the same bolt or stud as any other systems grounds especially if the other ground has a relay in it. The head or block are good isolators and normally have a few extra threaded holes that are not being used. More important than any of it is to run the main +/- for the ECM directly to the battery no mater how far away it is.
#17
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Marine efi is either very basic or very expensive. The underlying speed bump is a wet exhaust system OS sensors don't play well so your left with speed density..... Which means a carb jetted properly is going to do just as well at about 1/5 the cost......well pretty close to that.
#18
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Separate by not putting any of the EFI or ECM ground wires on the same bolt or stud as any other systems grounds especially if the other ground has a relay in it. The head or block are good isolators and normally have a few extra threaded holes that are not being used. More important than any of it is to run the main +/- for the ECM directly to the battery no mater how far away it is.