I finally bought a MD XYZ pipe. I'm running test pipes and by November my car needs to be inspected. Any of you run it with the cat and pass inspection? I really couldn't find a definitive answer and it doesn't seem like many people tried. Worst case I'll just put the cats back in...resonated xyz + AP single sounds amazing with stock cats. I'd just rather not have to get the car re-tuned and lose the power.

 

Really no one has tried this?

 

I'm really interested in the answer also ...

But i does not seem someone tested it, i've already asked the same question than you before...

I have my PPE longtubes headers to install and don't want to remove them everytime i have to do the legal inspection of the car...

 

So buy a set of generic high flow cats and do some custom work to make them bolt in. Or just have them welded in.

 

that doesn't answer my question

 

Not even close to what you asked. SMH

 

If you're not throwing a code for the o2 sensor it will pass emissions. If your inspector does a visual/sound inspection then it may fail.

 

It's throwing a code right now. Can you have it removed via tuning or would it just come back?

 

I was throwing a code from my test pipes and after uprev tune all codes are gone and haven't come back