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Fenderjack

11-02-2006 06:20 PM

Pcm ??? for you efi guys

This might sound like a stupid question, but does a boat with twin efi motors run 2 pcm's or 1 for both. I would figure it is like cars 1 for eacj, but wasn't sure, can somone clear this up for me.. Thanks JOHN

bowtie

11-02-2006 07:33 PM

Re: Pcm ??? for you efi guys

Each engine has to have it's own ecm, can't remember the last time I saw a car with twin efi engines.

Fenderjack

11-02-2006 08:05 PM

Re: Pcm ??? for you efi guys

Quote:

Originally Posted by bowtie

Each engine has to have it's own ecm, can't remember the last time I saw a car with twin efi engines.

Ya know what I meant :evilb:

Ted G

11-02-2006 08:34 PM

Re: Pcm ??? for you efi guys

In some boats they slave one ECU to the other so you can read both from a single hookup. Not sure what the advantage is but it has provisions for it. I found out the hard way that you have to run completely separate electrical feeds to them or the ECU will freak :eek: Never run the batteries on ALL :evilb:

bowtie

11-02-2006 08:47 PM

Re: Pcm ??? for you efi guys

Thats true but you still have 2 ecu's they are just connected for diagnostics.

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