POST 1 / ORIGINAL POSTEROriginal post
What happens to the rear O2 sensors if you delete the secondary cats? Do you just unplug them or do the bypass pipes have a spot to install them?
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o2 sensor ? for cat delete - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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YOUR RESEARCHo2 sensor ? for cat delete - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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POST 2Original post
If you are on a 2000-2004 the rear O2 sensors are after the primary cat integrated into the manifold and before the secondary cats, so you don't need to do anything since the mid pipes are after the o2 sensors.
POST 3Original post
Some pipes have provisions for the O2 sensors. My 04 only had O2 sensors after the primary cats, so there were no worries. What year & engine do you have?
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