PlayDate
Well-Known Member
Does the manufacturer claim that system is approved for marine use. I'd be reluctant to consider it if it wasn't. Still seems like a cure for a disease that doesn't exist.
The system he is considering has a marine version.
https://www.holley.com/products/mar...ine/sniper_efi_marine/sniper_efi_4150_marine/
The question is the gain worth it? Figure a $1,000 for the Holley Marine Sniper and another $500 for a Marine EFI fuel pump so $1,500 per engine for the two main components. That's $3,000 before the labor and wiring.
If I use your analog the "disease" is fuel efficiency related to the engine's fuel system. Most factory engines with carbs are "close enough" that modifications to the fuel system don't result in material gains. That said, a lot of other things drive fuel economy (weight and bottom growth) more than the fuel system.
Still, getting as close as you can to 14.7 AF fuel mix means that you aren't wasting gas or sacrificing performance which is why EFIs generally beat carbs for efficient fuel use. That said.....a properly tuned marine carb/ignition system will perform equal to an marine EFI system on a dyno all day long. Boats are either idling (650 rpm), no wake (1,000 rpm) or at cruise (3,200+ rpm).
Cars vary their rpms all the time and EFI will do a better job of managing fuel and performance than a carb on a car.
Last edited: