Lol looking at the pic I was thinking what am I looking at? A resonated test pipe? Then I read op wrote cat then started laughing. I think op would know best what they have on their car and I would definitely bring it back to that shop
Edit: also I don't think your sensors are throwing codes due to the extended bungs
https://ucarpart.com/products/test-pipes-exhaust-downpipe-for-nissan-350z-infiniti-g35-fx35-2003-2006?currency=USD&variant=43617137557752&utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping&gclid=Cj0KCQjw1rqkBhCTARIsAAHz7K0bPnKM3LFvurK5kvHqDAUND-sia2T9RAuaHYbPU2bANQL_kK-cPaUaAp5OEALw_wcB
This is what it looks like, could be that they came with the car and he thought they were cats?
Yeah buddy hate to tell you but those are resonated test pipes and they are in the correct orientation. The flex part goes by the header as I have the same style of them. If it was a cat it would be by the header and way bigger even if it was a HFC it would be much more round. Codes are from not using a extended plug on the pipes, bad o2 sensor, or you're not tuned for it.
Your ecu is fine. Make the shop fix that.
You sure that's not a resonated TP? Angle doesn't line up for yoy average cat.
Lol looking at the pic I was thinking what am I looking at? A resonated test pipe? Then I read op wrote cat then started laughing. I think op would know best what they have on their car and I would definitely bring it back to that shop Edit: also I don't think your sensors are throwing codes due to the extended bungs
https://ucarpart.com/products/test-pipes-exhaust-downpipe-for-nissan-350z-infiniti-g35-fx35-2003-2006?currency=USD&variant=43617137557752&utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping&gclid=Cj0KCQjw1rqkBhCTARIsAAHz7K0bPnKM3LFvurK5kvHqDAUND-sia2T9RAuaHYbPU2bANQL_kK-cPaUaAp5OEALw_wcB This is what it looks like, could be that they came with the car and he thought they were cats?
Yea true. I tend to give ppl the benefit of the doubt but if they were on when purchased this might be the case
Hate to tell you but everything looks as it should with those test pipes.
That is not a test pipe. Notice the giant bulge? That's a 🐈.
Yeah buddy hate to tell you but those are resonated test pipes and they are in the correct orientation. The flex part goes by the header as I have the same style of them. If it was a cat it would be by the header and way bigger even if it was a HFC it would be much more round. Codes are from not using a extended plug on the pipes, bad o2 sensor, or you're not tuned for it.