rtbrjason Posted October 26, 2008 Share Posted October 26, 2008 I just picked up a used cobb catted downpipe from a fellow board member. It doesn't seem to have a hole for an O2 sensor after the cat. Is that normal? The dp pictured on the cobb site does show a rear O2 sensor hole. This is for an 08 spec b. I haven't crawled under the car yet, but would just assume there should be a sensor after the cat? Is there any sense in replacing the gaskets when swapping the dp out? The car has about 8k miles on it. Link to comment Share on other sites More sharing options...
07GTLEG Posted October 29, 2008 Share Posted October 29, 2008 i am doing mine full cobb tbe this weekend. my car has 9k on it.i ordered a new dp gasket from 5 star performance just to be safe.my cobb downpipe has a bung after the cat and one up top with a plug in it. Link to comment Share on other sites More sharing options...
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