Carbed Blown 540's. First startup after not being ran for weeks, 55 degree weather. Late october, with cold lake water. Engines didnt stall one time idling around, or hiccup. idle in gear like a dream.. :evilb:


[youtube]http://www.youtube.com/watch?v=2FTRhpGzRwY[/youtube]

EFI hands down. I've ran lots of carbed and EFI engines over the years. The only reason to go carb over efi is that its cheaper. EFI is infinitely more tunable than a carb. Especially if its setup to control ignition and fuel. Nowadays, buying anything with a carb would be a hard sell for me. Especially if someone ripped out a perfectly good EFI system to put a carb setup in it , I wouldn't touch it. Lord knows what other hack job they did on it.

Bottom line: you gotta pay to play with EFI

Mild
 

Its true that cig idles pretty damn nice for a carb. ..now if it had bravos and needed to idle closer to 800 rpm that might be a different story, a story I fortunately wont have to worry about.

Thanks for all the responses,
I am still not sure what direction I'm going in yet.
I do agree that efi is nice turn the key and go. I also agree that a carb motor is easier and cheaper to make horsepower modifications. Most of the guys I run with are running carbs and they never have problems. If the boat doesn't sell then I know that I want to get some more power out of it. Even though my intake is ported on my efi setup, I was told that with out putting a blower on it I'm about maxxed out what it will make for NA power. (Not sure if this is true or not). I am not crazy about doing a blower especially if I plan to sell the boat.

Maby it's just me but if there was 2 identical boats for sale, one with a 502 mpi and the other with a hp500, I would go for the carb hp500.
I am not saying that by putting a carb on my motor is going to make it a hp500 nor would I sell it saying it was a hp500 but the end result would be similar.
:party-smiley-004:

I wouild take a factory EFI 502 over a hoped up version as a buyer.

The better compassion is if one was a HP 500 and the other was a HP500EFI.

I am a old carb guy, but just don't see ripping out all the EFI to go to a carb.
If u were building your own motors and the boat was a carb boat I can understand.

Sounds like what u have isn't that bad.

This, Would chose the 500efi everytime, and pay more for it.

The Stock 502 Mag intake even ported is MAYBE good to 525hp. A set of aftermarket heads and a decent hyd roller cam, A dart single plane intake and a 850 holley will walk away from it. I know a guy who had a pair of 502 mags . He upgraded cams, installed brodix heads, intake and carb. When he went to sell it, he installed the stock intake/injection system, which was tuned for the mods. Boat lost more than a few MPH by going back to the stock mag intake/injection. But he also knew that 9 out of 10 people would pick the stock EFI over the carb, even if it made quite a bit less power.

Or do a setup like this from Holley. Maybe then you wont get labeled a ''Hack" ..it really is a nice setup though.

i have a bravo drive .i am running a 540dart with 718 hp . i idle at 800 http://www.youtube.com/watch?v=XKQj2fy91BU

Ok,,,,what rpm were the " ideling " at LOL !!!!!

Dan is greatful he doesnt have Bravos right about now !!!!