MEFI-3 & 4 CAN Protocols

[KidTurbo]

Think the firmware is written in C. My embedded systems developer friend took the design specs and ran with it. Everything is being hard coded so far. We started this project to accommodate guys running dual high HP engines with aftermarket ECU's. While Holley recently released their own 7.5" display, they are not what ya call "marine friendly" or dual engine capable like the Garmin, Raymainre, and other specifically tailored to boating units. Because N2k and J1939 are basically the same thing with slightly different PGN's, the option to run off the shelf industrial units is there.

http://www.fwmurphy.co.uk/products/m...view_pv450.htm

[roughneck427]

I have a mefi 3 in my boat I use mefi burn tunerpro and I have some other flash ware that im using that's way quicker on the flash time on the mefi 3. TTSdata master also hooked me up with the windows 7 version licensed of the datalogger. Here is the thread on my build http://www.gearhead-efi.com/Fuel-Inj...EFI-tune/page2

PM me your email and I can send over the trial version of tts and some data logs.

[KidTurbo]

Mailbox is full.

Nice project, sure wish you lived closer. Would love to test with that data logger, it likely does everything we need to capture. One of the guys over on EFIlive forum started to convert the ALDL PIDs a while back, but never finished posting results. I've also been toying with the idea of doing a E67 conversion package to replace the MEFI-5 units with a more friendly software package.

[roughneck427]

I sent you an email. I saw your post on performance boats.com in the GN7 on the dyno sub forum. I sure do like the mefi once I got my boat dialed in. Its a strait fwd ecm and wasn't that hard to tune it especially being in a boat which is mostly on a load at all times.

[HoleInOne]

KidTurbo,
I came across your post and may be able to help you out.
I have a MEFI4B with Tunerpro and MEFIBurn and the cable to do it.
If you would like to work together on the map, I think we should be able to figure it out. Im trying to get a better handle on how it all works also.
PM me and I will give you a call.

[KidTurbo]

PM sent.

[sincerus]

Hi

I realize this is 4 years later but I hope you can help.

I have a GM 350 RamJet engine in an old Chevy pick up with the MEFI 3 control system. [

The engine runs very rich and I would like to lean it out.

Any help?

Chris

UOTE=HoleInOne;53490]KidTurbo,
I came across your post and may be able to help you out.
I have a MEFI4B with Tunerpro and MEFIBurn and the cable to do it.
If you would like to work together on the map, I think we should be able to figure it out. Im trying to get a better handle on how it all works also.
PM me and I will give you a call.[/QUOTE]

[KidTurbo]

Sorry. I actually gave up on MEFI a while back. To many better and affordable ECM options out there now.

MEFIburn is the only software I know of which allows you to make such fueling changes. I played with it for a couple days last year on a marine engine, then convinced the owner to upgrade to a Holley EFI setup.

-K