Factory exhaust and 02 configuration on a single catalyst Vortec. 3 pre-cat 02s. An 02 after each manifold and 1 after the Y-pipe. 1 behind the cat.
Factory exhaust and 02 configuration on a single catalyst Vortec. 3 pre-cat 02s. An 02 after each manifold and 1 after the Y-pipe. 1 behind the cat.
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