Cummins Fueling Status and Timins Status

[comnrailpwr]

Does anyone on here have a list as to what all the counts mean for main injection fueling status, main injection timing status 1 & main injection timing status 2 status when logging the cummins ecm's? CMB in particular. I have searched online without luck and know I have seen a list before. Greatly appreciated. thanks Jake

[GMPX]

We used to use those to trace through the code paths when finding limiters etc, sorry but I don't have a complete list with explanation on what each number represents.

[comnrailpwr]

I'm hitting some sort of limiter thats holding mm3 back to 128-130 but worse timing. Even if I scale the tune to 130 is full tilt then timing still isn't hitting peak in any of the maps. Even made min/max same as base table and it's still a few degrees off.

This is a standalone setup in a puller so all limiters and altitude tables are maxed or same as base table. Only necessary sensors are being used.

The ones I'm hitting are

Main injection fueling status - 45
Main injection timing status 1 - 29
Main injection timing status 2 - 25

[comnrailpwr]

I'm thinking possibly something to do with not having speed signal, ambient temperature signal or barometric psi signal. I have reworked the baro psi scaling to now read low side fuel pressure with a 0-60psi sensor. Unplugging that made nod difference tho.

[Orange Stroker]

I'm thinking possibly something to do with not having speed signal, ambient temperature signal or barometric psi signal. I have reworked the baro psi scaling to now read low side fuel pressure with a 0-60psi sensor. Unplugging that made nod difference tho.

Did you ever figure this out for sure? I agree with you on this I believe it is something to do with standalone. I'm only ever hitting 130mm3 as well in a Fummins conversion. There is a limit not mapped out in EFI Live that we are for sure missing here i think. I'm just going to try rescaling to 110mm3 and see how it works out.


I have full list of fueling status info if you would like for your records. Just pm me your email.

[kyle027]

I would like the list of fueling statuses if you wouldn’t mind sending them to me

[Frankie92]

Did you ever figure this out for sure? I agree with you on this I believe it is something to do with standalone. I'm only ever hitting 130mm3 as well in a Fummins conversion. There is a limit not mapped out in EFI Live that we are for sure missing here i think. I'm just going to try rescaling to 110mm3 and see how it works out.


I have full list of fueling status info if you would like for your records. Just pm me your email.

Any chances I can get a list of the fueling status as I'm running into some similar issues atm, above 3k rpm goes from status 8 to 42.

[GMPX]

Jake, as far as I know there is everything needed in the CMB .calz files to command whatever you want so it might be limiting based on some sort of error. Anyway that aside, I had a quick look in my list and Main Status = 45 means a Torque Management Limiter is active.
What is the PID name on the timing ones? I assume this is with an EDA log file? Though I bet we find that those timing states relate to torque limiting too.

[comnrailpwr]

Yes EDA.

Jake, as far as I know there is everything needed in the CMB .calz files to command whatever you want so it might be limiting based on some sort of error. Anyway that aside, I had a quick look in my list and Main Status = 45 means a Torque Management Limiter is active.
What is the PID name on the timing ones? I assume this is with an EDA log file? Though I bet we find that those timing states relate to torque limiting too.

[comnrailpwr]

Another thing I have done is do away with the oil pressure signal input and repurposed the coolant temp sensor for oil temp as my engine is all filled. Wouldn't think that would affect anything as oil temp is same range as coolant temp, unless the ecm needs that input from the factory oil psi circuit closure.