Any info , specs or brochures floating around on the 1986 Merc 500 or 540 efi i/o pkgs that were used in the Open Class boats ?
Actually the 500s were used in APBA Open and the 540s in NPBA E Class .

Here is a Merc 500 EFI brochure...

about a year ago I was wondering around fort Lauderdale and there was a pair of them sitting in Jerry's marine it could have been two years ago. Prbably still there sitting on the rack.

Many thanks !

Funny, the ad says it uses a no.3 but is pictured with a no.4

Anything else out there ?
I'd like to find wiring diagrams , parts books , manuals and anything else I can find .
The bellhousing tag is stamped 540 EFI Nov 1985 .
Thanks for reading this , perhaps some one will have something or know who to call .
My resto project is moving forward .

I'm still looking for any wiring diagrams , service/diagnostic and parts info on these EFI systems .
Some OSO a hole sold me spares a two years ago . He screwed me out of the manifolds though , threw everything in a ****ty box that broke in shipping losing some of it's contents and never provided me with the service books he claimed he had .
I'm putting these motors in my old Chris and anything would be of great help in getting these things up and running .

Have you tried Mel Riggs? Riggs Marine Eldorado, WI.

Good luck, cool project.

Kurt

Also try Keith Eikert. Lightning Performmance

Wow 12:1 compression, those things have got to have a mean bark!