My 350Z is throwing O2 sensor codes because of the test pipes on it, what is the best way to get rid of this? Some people have told me a tune could do it and others have told me I need to buy a fake O2 sensor that mimics correct readings.

 

Just buy some 02 sensor bungs online or from any auto parts store.

 

what do I do with said bungs to fix the code?

 

You need extended bungs that will increase the distance between the sensor and the exhaust, tricking the car into thinking there are cats. You might be able to find threaded bungs that you can install in the existing one, or you'll have to have some welded in.

 

What codes are you throwing? I have test pipes on my 2006 and it’s throwing the upstream codes- not the post cat codes....

 

I would have to double check the codes but I believe it is the downstream ones.