Hello, I have been wondering if anyone else has had any issues with the P12 PCM just deciding to do whatever it wants and not go down to the rpm set in the tune?
I have been able to set it to 900 and it will idle there but it will always run 848 if I set it below. If I manually override in vcm scanner the car will go to whatever number I set down to 600 without issues.
My car is a 2004 ion redline.
My friends 2007 cobalt ss doesn't seem to have this issue.