Symmetry is an important property found in a large number of nonlinear systems. The study of chaotic systems with symmetry is well documented. However. the literature is unfortunately very poor concerning the dynamics of such systems when their symmetry is altered or broken. https://www.roneverhart.com/BRExhaust-2004-2006-Nissan-TITAN-5-6L-Direct-Fit-Replacement-Exhaust-System/