Low RPMs bucking

[XfireZ51]

Originally Posted by MuRCieLaGo

Put my hand near the flanges/clamps and I felt some air.



I really need to do some researches regarding that closed loop thingy. I'm not sure I understand how it works.

Thanks a lot for your help.

Closed Loop means that the ECM is using O2 sensors as one of the inputs for calculating injector pulse width. The VE tables are the main fueling tables and then the ECM utilizes O2 sensors to modify those values. There's more to it but this is the basic operation.