CUMMINS SWAP 2250 to 2350.

[Rawze]

(07-04-2024 )Scaner2 Wrote:  Hi guys,
Got a truck with 2350 engine instead of 2250. Ecm, wires, intake manifold from 2250. I'ts 'tuned' and after checking seems to be a bad one with a lot of blocked faults and working not in chi4 mode. Injector codes seems not to be changed. Stock cal have to be cl10132, right now have cl10138. I will email uploaded cal file to Rawze and hope maybe he will have time to take a look.

A truck that was made for a CM2250 engine, and someone installing a CM2350 into it ...

I should at least mention that it is officially against EPA regulations (without also swapping all the 2350 emissions hardware to go with the newer model engine) .. otherwise, here is the info...

- An ISX cm2250 to 2350 swap, otherwise, consists of simply re-using the CM2250 wiring and ECM on the newer block. I think there is a fuel rail pressure sensor that does not plug in, and for this sensor, the older sensor needs to be installed instead. Other than that, everything else typically plugs right in. The CM2350 turbo that was meant for that ser# engine should also be used,.. and not the older CM2250 turbo.

- There is however NO factory program (or otherwise) from the red engine maker that will run the CM2350 engine hardware properly. A CM2250 program in the ecm will make it fire up and run.. but it will not be anywhere near correct for it, and it will result in efficiency losses, and eventual progressive engine damage (severely shortened engine life).

Everything from compression ratio, fuel-air-mix, boost levels, injection timing, injector spray angles, injector trim code logic, injector coil conversion logic, fuel quantities, cold ambient, cold weather settings, etc.etc. etc. ... are all completely different for a CM2350 engine. The ecm is also not going to compensate for any of this stuff at all. The ecm is beyond dumb as a brick and has no Super-duper AI fix-it sauce inside it. it will just tear the engine up slowly over time and not care at all.

basically, use the cm2250 ecm... the 2250 wiring harnesses, the 2250 emissions and all stuff will still be wired correctly.

On the programming side of things, the things mentioned above need to be set, .. and if the emissions are kept, the emissions settings for the post2 injection cycle and a few other things needs tweaking a bit. -- I typically end up having to make several of these programs for people each year. Even the red engine maker and OEM network of morons and nitwits have been known to abandon people after they themselves do swaps like this, then finding out the hard way that there is no real solutions without custom programming.

give me a ring to talk about it and so we can get on the same page with what has been done. I PM'd you my number.

Tags:

2250 2350 swap, 2250 ecm to 2350 engine, 2250 swap, 2350 swap, isx swap