Conversion x15 2250 - 2350

[Rawze]

(03-19-2024 )Goody68 Wrote:  Hi, I was reading this thread and am looking to do an engine swap like this. I have a 2011 ISX12/11.9 CM2250 and am looking at installing 2016 ISX12 CM2350 X102. So from what I've seen on this post I can do this and still use my CM2250 ECM. What kind of programming would have to be done as you mention and where could someone get this done. Could you give me a little more detail about this part of the swap. Thanks

First of all, I do not, and would recommend swapping out a 2250 with a 2350 engine, as it is illegal for emissions reasons in some countries, ... but there are people who do this any ways.


That aside.. For reasons mentioned in previous posts, a custom program has to be written for the CM2250 ecm to run the newer model engine properly. They may look similar on the outside, but they operate very differently on the insides.


As far as the programming itself goes ...

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(If the old CM2250 ecm happens to have a delete/custom program in it) ...

Then the custom program needs to be copied out (using CT) for backup purposes in case any dash or other truck-specific settings get lost. After that, the original factory programming for the truck/old engine needs to be flashed put back into the ecm.

The factory program also needs to have at least 10+ minutes of key-on time after the re-flash to give the ecm time to erase old memory, etc. in the background before proceeding. All truck-specific settings also need to be restored as well.

I.E>> To start the process, the program in the 2250 ecm needs to be its factory original for both the old engine and truck. It needs to be free of any buggering or deleting, etc. by anyone. THIS REGARDLESS of if the rest of the truck was deleted or not.
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Once it has been established that the original 2250 programing for the truck/engine is in fact all 100% factory set, has all proper settings, etc.. and has not been altered by anyone ...

Someone then needs to copy out (using CT) and to send me the clean factory file that was in the CM2250 ecm, that was meant for the old engine and truck.

I will also need the old engine ser# ... and the new engine ser#, so that I can set the program up to run the new hardware.

After that, its a matter of getting it e-mailed back to you, and you putting the corrected file back into the ecm yourself.

The CM250 ecm is also not able to read injector trim codes itself, so someone will have to open up the valve cover and get all the new injector trim codes and type them in using the Insite software.