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I truly believe one of the big drivers for efi was emissions.
I go back to Harley’s only because they’re so easy to work on for me because the engine is so accessible.
All the efi Harley’s require O2 sensors and run extremely hot. So hot a favorite mod is to install an oversized oil pan w inlet and outlet lines on opposite ends of the oil pan vs right next to each other.
I haven’t been in an efi mercruiser engine well but if these require the same emissions standards I know they’re running muy caliente.
But I won’t buy a boat because of having or not. I just know I don’t work on that fancy stuff.
The Harleys run hot because to meet emissions HD is running them as lean as they can to comply with emission standards, take your bike out and get a good person to dyno tune it and you will see a big difference in performance and how hot it runs but you might want to change the cam in it to really take advantage of the tune. Had both of mine dyno tuned and it does make a difference with heat.
Sorry but if carbs were all that great they would still be the norm. Yours is a minority opinion based upon emotion not facts.[QUOTE="EFI improves starting, smooths out idle, increases throttle response, improves mileage and reduces emissions.
This is just flat out bad information. There's 124,000 btu's in a gallon of gas, The same amount of energy is produced whether efi or carb so mileage will be the same. Smooth idle, increased throttle response, instant starts, is all about who set your carb up if that's your problem. Should not be blaming your carb if this is happening.
Emotions? Funny guy, you don't get around much do you? Visit other sites? What part of my explanation sound emotional to you? I do know you hate to be wrong LOL. Do some research please. When's the last time you owned a V8 with a carb? Grumpy old guy that's always right, yah we got a few here. Ha HaSorry but if carbs were all that great they would still be the norm. Yours is a minority opinion based upon emotion not facts.
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its not direct injection .
afaik the 'efi' was the first generation with one nozzle for all cylinders on the manifold while 'mpi' has a nozzle for every cylinder directly before the intake valve so mpi is far superior to efi .
your sooted intake has nothing to do with fuel injection but with exhaust gas recirculating systems where a part of the exhaust gas is provided for another combustion to reduce emmisions .
boat engine does not have egr
Even the mpi's are batch fired. 4 go off then the other 4, so not that efficient. Fuel is hanging around until it can be used,