I noticed that the sound was emitting when you were talking and driving.
Question: Did the source of the sound emit from the Instrument panel (dashboard) or was it recorded from the outside of the vehicle? I ask this because some 'sporty-type' cars have a system whereby a faux sound is funnelled into cockpit from another source such as, I surmise, the exhaust manifold and not from the exhaust outlets. Some or all Ford Mustangs and all Focus RS's, fo instance, have this sound method.
Question: Did the source of the sound emit from the Instrument panel (dashboard) or was it recorded from the outside of the vehicle? I ask this because some 'sporty-type' cars have a system whereby a faux sound is funnelled into cockpit from another source such as, I surmise, the exhaust manifold and not from the exhaust outlets. Some or all Ford Mustangs and all Focus RS's, fo instance, have this sound method.