CMC High RPM Fueling

[GMPX]

All I can say is on this OS on this truck I have changed it and it did not brick or anything like that, haha.

So just to clarify though, on that OS 'just' doing that cal eliminates the 3,850 hard limit? Or did you do too many at once to know it was that one specifically?

[Mitco39]

So just to clarify though, on that OS 'just' doing that cal eliminates the 3,850 hard limit? Or did you do too many at once to know it was that one specifically?

I changed to many at once to know if it was one specifically, but I do know I found this read only value in another software and did confirm it changed when changing this one parameter. I can send a tester tune out with just the one changed and see what happens, it would be a bit though.

[GMPX]

Out of interest, these are all the additional limiters we had found in CMC (but decided to hide them) because we didn't know how to describe them or in testing at the time they made no difference.
What is shown as B9994 is the one you pointed out Mitch.

[GMC-2002-Dmax]

Had a lot of stuff hidden in that box in the old CALZ closet !!!!

I found lots of stuff like that in LML code, mapped it, tried it, some did something, others do something, just didn't know what !!

Wish i knew how IDA worked !

[GMPX]

Wish i knew how IDA worked !

Unfortunately IDA is only as powerful as the person driving it, it is essentially 'dumb', there is no magic button that it tells you what the code is doing.
If you want to work on LML then you need to learn Infineon Tri-Core CPU assembler like you know English (yuk!), for the Cummins you need to know PowerPC assembler at the same level.....no easy path

[GMC-2002-Dmax]

I got IDA PRO for DUMMIES..........still just look in the code until I find a table and map it in.

Found a good bit of stuff..........still looking for stuff.

[Road]

Out of interest, these are all the additional limiters we had found in CMC (but decided to hide them) because we didn't know how to describe them or in testing at the time they made no difference.
What is shown as B9994 is the one you pointed out Mitch.

Those 3800 RPM are limiters when there is fuel pressure errors (most likely the ones most are hitting). The 3900 is the engine overspeed limit Hyst. No ideal what B9994 is.

[2007 5.9]

Those 3800 RPM are limiters when theqqre is fuel pressure errors (most likely the ones most are hitting). The 3900 is the engine overspeed limit Hyst. No ideal what B9994 is.

What are these errors you speak of? If my actual meets command up to the hard limit, where is this error?

[Road]

What are these errors you speak of? If my actual meets command up to the hard limit, where is this error?

Several limiters for fuel pressure and regulator current. Over/under etc..etc..

[2007 5.9]

Several limiters for fuel pressure and regulator current. Over/under etc..etc..

Which are not available in public release software?