Originally Posted by
mxatunerjg
So to expand on this more...I disagree with Diablo's approach to the injector tuning, but I have also contacted them about this situation. All I got for a response was "It's because the scale wasn't retained". So assuming they are meaning the injector scaling I decided to adjust the injector pulse width tables based on their method. I got everything running well using only the Fuel Mass columns, leaving the pulse width columns the same as they were from the factory. Fueling was as needed but still had the same stumble at 2500. So again I set values in the PE tables to 0 with the exact same results as before.
I do know a way I can probably make this work on the fueling side, and that is to set all PE values to 0. Then either turn off NN and tune based on only the VE tables, or tune fueling using only the Pulse Width tables creating a slope that accounts for the changes as RPM and boost increase. I don't want to do this because this is a street driven vehicle, and since the VE tables at 0 seem to cause ignition timing changes I would really need to figure out where those values are coming from.
More to come from that drama that unfolds!