Predicted Engine Torque Source switched from "Trans" to "Axle"

[ManuCamaroGen6]

Hey,

I noticed, that my "Predicted Engine Torque Source" in VCM Scanner switched from "Trans" to "Axle".
Now "Predicted Engine Torque Cmd" gets less from gear to gear. Especially 4 -> 5 leads to a huge problem where "Predicted Engine Torque Cmd" becomes less than "Delivered Engine Torque" and so ECM starts to close the throttlebody.

I am not 100% sure but I believe it changed after installing my unlocked TCM.

Has anybody ever experienced sth like that and has an idea how to fix that?

Thx a lot!!!

[TriPinTaZ]

Possibly your Torque and or airmass model is wrong or your TCM torque limiters are wrong. But no tune or log you won't get much help on here.

I wish the mods would make a sticky that says, if you want help post a tune and a log.

[ManuCamaroGen6]

Thx for your reply.

Sorry! I am completely new to this forum and had no idea.

This is my latest log after installing the unlocked TCM... and of course this tune is under construction.

Neu_MAF vt.hpl

[Camaro6]

Your airflow numbers are off; therefore, your tq numbers become off. Either fix the airflow numbers in the tune or up the DD tables as a quick fix.

[ManuCamaroGen6]

Thanks for your answer.
The numbers may be off a bit but in the end Lambda stays somewhere around that point where I wanted it to be in my tune so are you sure that this is the reason? I tried different values in my MAF calibration but it did not change the sources in the log and I also lowered my tables in VT but this also did not change the source. That is why I am so confused.

[TriPinTaZ]

Your torque is wrong. Torque is calculated directly from airmass(and some other stuff). If your Lambda is where you want it then you need to change the torque limit or affect the torque calculations themselves. Airmass isn't the only way to affect the torque calculations.