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-   -   5.0 mpi to 5.7 mpi (https://www.offshoreonly.com/forums/general-q/383411-5-0-mpi-5-7-mpi.html)

Bavaria1994 08-15-2024 03:11 AM

5.0 mpi to 5.7 mpi
 
Hello from Austria,
I would like to convert my 5.0 MPI to 5.7 MPI.
Can someone edit the engine control unit for me?
I also have the Axius joystick system.
Boat was built in 2009.

Thank you in advance.

AllDodge 08-15-2024 09:26 AM

You cannot convert a 5.0 to a 5.7 but you can replace the 5.0 with a 5.7 or even 6.2

Reprogramming the PCM is not that easy and may not be able to be accomplished, but replacing with a factory one program for a 5.7/6.2 is

What is your motor serial number?

Bavaria1994 08-15-2024 12:17 PM

hello, yes of course I mean swapping to a 5.7.

Serial number: 0w962289

The control unit is available new from Mercruiser for 5.7 with closed cooling and Axius.
However, it costs around 3000 euros per engine...
thanky you!!!

AllDodge 08-15-2024 02:41 PM

The SN is coming up a Bravo drive
Yes it will be pricey, new ECM comes in at $2700 USD here

Not even able to buy a "new" 5.7, it's either the 4.5 or 6.2
If you get a new long block and ECM you should be able to use everything else off your motor



TomZ 08-15-2024 03:36 PM

I would look at part numbers to see if there are any real differences. The tune for a 5.0 and 5.7 can't be that much different.

TomZ 08-15-2024 03:39 PM

Do you have the engine serial number from the 5.0 MPI?

Bavaria1994 08-25-2024 04:36 PM

Hello:
1A307152

lg

AllDodge 08-25-2024 05:14 PM

The SN comes up correct for that year
SN

Bavaria1994 08-25-2024 11:42 PM

I will change the engines and test it with the 5.0 ECM.
i have Riser with AFR Sonde. So i look at Lambda (Afr).

lg

underpsi68 08-26-2024 05:25 AM

You can not use a 5.0 ecu on a 5.7 without reprogramming.


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