2002 GMC Sierra 1500 Exhaust Systems
Sierra 1500 Exhaust Tip: Unless you have added a lot of extra horsepower to your vehicle, chances are good that your existing catalytic converters are not effecting engine performance.
Most modern catalytic converters manage to reduce emissions without impacting exhaust flow, so new catalytic converters should not be high on your performance accessory priority list.
2002 GMC Sierra 1500 Exhaust Systems Video Gallery
Video Gallery Reviewer: Tony
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