Just got in my new tune today. Put it in and after a while of driving a code came on that read: P0507 - Idle Control System RPM Higher Than Expected. WTF does that mean? I had them move the rev limit up to 7,000RPM. After the light came on i noticed that the engine would only run up to about 6,200RPM and bounce around like the rev limit was now set to 6,000-6,200. Can anyone explain what is going on?