I haven't pulled my cat yet but I can feel the back pressure from the melted cat. I am just wondering if anyone out there has found a 3" test pipe or a hi-flo cat that has the bung for the rear o2 sensor in it?
I did, when i was NA now i got JWT to remove the CEL... all the rear o2 does is see if your cat is working.. if you dont have a cat it wont give the correct readings and set off the light... most people get the light some dont... its the same as with people getting the fidanza fw on a b14, most get the CEL some lucky few dont get it
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