How Do You Make Your Pontiac Sunfire Sound Like A Muscle Car?
Muscle-car noise is mostly generated through a combination of engine noise and vibrations in the muffler. Pontiac engineered the stock Sunfire to run with relatively low engine noise. Making your Sunfire sound more like a muscle car requires tackling the exhaust system. The standard exhaust on the Sunfire runs from the exhaust manifold through the catalytic converter — required by law in some states — and through exhaust pipe to the muffler. The Sunfire is engineered to accommodate dual exhaust, which helps with upgrading the noise factor. Disconnect the existing exhaust just after the catalytic converter using a socket wrench. Trace the exhaust pipe toward the front of the vehicle. The catalytic converter sits flush with front seats, and is shaped like a small muffler. You would come across some braided, flexible piping just past the catalytic converter, if you continued tracing the piping past the converter. The exhaust pipe connects to the catalytic converter through triangle-shap
