SDFever

Anyone out there done this?

And I can't find enough reading to determine whether or not the 4 can do digital tach? The harness is easy. Got that already. Just looking to see what MEFI has worked best for you 4, 4a, 4b or 5?

Thanks!

DesertRage

iTrader: (2)

Have you made any progress? I know the 4s will run crank fired ignition like your 496 has.

articfriends

iTrader: (1)

Tyler Crockett did this on quite a few, I believe he used mefi4'bs, Smitty

DesertRage

iTrader: (2)

Have you looked into the Holley HP EFI systems? I'm running one on my 565 with crank fired ignition and coil packs. Alex Haxby has a very nice thread going on the system.

47EXCALIBUR

I have done it.... I used MEFI4B's and got rid of the 555 so i could adjust and the program when i put whipples on them .... the volvo penta version of the 49HO used the MEFI4B also

Steve H

I switched from the MEFI one to Holley HP. Couldn't be happier.

The HP is much easier for a rookie tuner like me, when compared to the MEFI.

BUP

iTrader: (9)

have to ask digital tach meaning smartcraft or something else. Smartcraft only relates to ECM / PCM 555. Also I do not think MEFI 4/a will work because the 496 is distributorless has cam and crank sensor. I am sure MEFI 4b and 5 and 6 will work for a 496. I could be wrong about MEFI 4/a but again I do know 4b will work for the 496.

I have seen MEFI 4 done with a digital display but it was a whole display. Also I know Boostpower has done it as well with digital display gauges as a whole unit. Want to say he used MEFI 3 or 4 if I remember correctly. Neither one was from a 496 app.