Join Date: Aug 2012
Location: Austin, Texas
Car: 2001 VDC/SC One of a Kind
Feedback Score: 2 reviews
Why would you want to treat something you depend on daily in such a manner?
You may get the light off, but you will not correct the problem. Taking the O2 sensor out of the exhaust stream is not a good idea.
You need to find what the problem is before it gets worse. If your engine is not performing as its designed and you have a high amount of HC, you will end up clogging the CAT which creates a lot of backpressure to the engine, creating higher engine loads and loss of power. Not to mention potential damage to internal parts.
Find the problem. Don't mask it. You can't sweep it under the carpet and forget it.
If you have been relying on a shop to find the problem and have been spending money only to be right back at the start, then find someone who knows what they are doing who can get to the issue and correct it.