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Custom Exhaust Build Crossover Pipe

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The crossover pipe is scribed to tie into the passenger-side downpipe, then lead into the cat. This YJ has an OBD-II Vortec V-8, which wants signals from O2 sensors before and after the cat. Sensor bungs are added to the tubing in approximately the OE Chevy proximities.
Custom Exhaust System Build - You Tube

 The crossover pipe is scribed to tie into the passenger-side downpipe, then lead into the cat. This YJ has an OBD-II Vortec V-8, which wants signals from O2 sensors before and after the cat. Sensor bungs are added to the tubing in approximately the OE Chevy proximities.  View Related Article

 

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