Header Installation
Before putting the x-pipe in place, the rear O2 sensors install into bungs welded in aft of the catalytic converters. The sensors are at severe angles to each other since vertical clearance will be tight between the pipes and the C6's driveshaft tunnel crossbrace. We should note that ARH refuses to use anything less than the highest-flowing metallic-substrate catalysts, and these units reportedly flow much higher with their larger-holed ceramic honeycomb than those used by other companies.
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