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b7 exhaust questions

Old 04-05-2016, 06:01 PM
1st Gear
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Join Date: Apr 2016
Location: Illinois
Posts: 4
Default b7 exhaust questions

I have a 2007 Audi A4 2.0t, 6 speed. My flex pipe just rusted out and broke off on the back side of it. I found a direct pipe replacement for that part but was thinking of a test pipe or straight pipe for the top part of the down pipe. It looks to have 2 o2 sensors in it and all the direct replacements I can find have only one o2 sensor mount up by the turbo. Since I want to get rid of the cat is there a way to delete the bottom sensor. I'm on a strict budget right now due to just buying the car and a van for my wife. I'm not really worried about the CEL being on (bc it already is for the idle/air sensor) but would like to be able to get rid of it as soon as I can so I will be able to know if something is wrong. Any and all help is completely appreciated.
Old 05-07-2016, 09:43 PM
ImTheDevil's Avatar
Join Date: Jul 2006
Location: Binghamton, NY
Posts: 11,670

You'd have to have the second sensor coded out in an aftermarket chip to get rid of it completely and clear the CEL for the missing sensor.
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