Quote:
Originally Posted by bobfacs
I ran the exhaust in Track mode for the last week. For the most part, the sound is no longer happening. Sometimes as I come to a stop and the engine returns to an idle rpm, I hear a sound, maybe a light back fire.
I placed it back in the touring mode and the sound returned.
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Track Mode adjusts a variety of different aspects of things from the motor back. It will impact whether the exhaust "gurgles" when decelerating or not and will also affect how/when the AFM will kick in and out (assuming it's an Automatic). It will also dictate whether the bypass butterfly valves on an NPP exhaust are open or closed and when the changes will occur. In order to know which actuators may be involved in the noise, more needs to be known about the configuration of the car as I mentioned in a previous post.