What ECU does a ...
#1
What ECU does a ...
a 2003 Merc 525 EFI have ??? Is it a MEFI 4 or a PCM-555 ?? Or something else ?? A friend is going to look at a boat with 525's and I have a Rinda scan tool but my connector only goes up to MEFI 4. Also what years were there problems with the CMI headers ??? Anything else to look for on the 525 motors?? It is a fresh water boat also.
Thanks,
Smitty
Thanks,
Smitty
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Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
#3
Thanks Griff !!!!
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Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
Want your ECU tuned right?? Call Mark at Precision www.pmefi.com
#5
Registered
As Griff mentioned, all 525's use a PCM 555. Mercury never used a Mefi 4.
Basically, the 05 and later engines are a little better. They have better headers, head bolts, and head gaskets. That doesn't mean that the 04 and earlier aren't any good.
Take a few minutes and read this thread. There is some good info on all of the drawbacks, issues, and things that need to be addressed with the 525's.
http://www.offshoreonly.com/forums/g...any-hours.html
Eddie
Basically, the 05 and later engines are a little better. They have better headers, head bolts, and head gaskets. That doesn't mean that the 04 and earlier aren't any good.
Take a few minutes and read this thread. There is some good info on all of the drawbacks, issues, and things that need to be addressed with the 525's.
http://www.offshoreonly.com/forums/g...any-hours.html
Eddie