Standard 502 Merc. Do they make a top end conversion kit with the computer, harness, injectors, etc from the newer 502 MPIs to essentially convert the 502 to a 502 MPI?

If not, piece together yourself and control with a Big Stuff or the like?

What would you say is the easiest/most cost effective method of converting? Thanks!

I have 2 complete MPI units off a 2001 fountain for sale $2000 pair (716) 510-4411 dan

What all is included with for that?

I have a complete 502 mpi setup off of 2000 mag mpi engine...everything needed is included...upper and lower intake, fuel rail injectors, throttle body distributor, coil, harness, mefi 3 computer even the merc cool fuel setup with pump and regulator. $800

I believe cams are different. Besides with all the problems others are having with EFI I would go with a good single plane intake, holley carb and HEI distributor. Think about having the MPI programed and running perfect after the Swap.
Just my 2¢.

Yeah he will need a cam ground for EFI...I dont have the 502mpi cam I sold it with the shortblock.

I have a 502 MPI cam. Just converted the 502 into a 540 , dumped it all except block, oil pan and accessories. Holley HP EFI, 2000 cfm TB with Holley intake. It will be posted on the EFI for everyone thread, once off dyno.

I have 2 100% complete Cutler systems from a 1993 Baja. One has a bad ECM. Bob Lloyd at Full throttle Performance has an ECM. Had I known he had this before I converted back to carbs, my Dad would have kept the system. $1200 for all. These are 100% complete, including wire harness, fuel pumps, and manuals.

If I don't figure my 502efi issue out Ill give this **** to ya! Stick with a carb !!!

Anybody use any of the new Easy type EFI units that bolt on a carb mount?? They look pretty cool and tunable for use up to 600HP.....