Shift
Well-Known Member
Its not a noise cancellation featureFor those that are upset of the harmonics pumped through your speakers for sound cancellation. 1, its designed to work when your windows are up. This is done to keep the car quieter in the interior without having to add weight in insulation. 2nd, if you don't want the audible signal, which is barely audible to the human ear due to the frequencies and the amplitudes used, just put the windows down as the system will not be capable of canceling out the pure power and sound of that sweet exhaust.
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