Nissan 370Z Forum - View Single Post

elhombre · 03-06-2024, 02:31 PM

Hey everyone! I just had my tuner install ISR HFCs on my 09 370z.

The car was throwing a P0420 for catalyst efficiency, so I thought it was a good excuse to upgrade.

My tuner suggested that he could put in the O2 defoulers to keep the codes away or he could "disable" the codes (P0420/430), which he did for my P0300 code and I have had no trouble with passing inspection. I told him to just do the codes as the defoulers seem to be a hit or miss.

However, I am concerned that this will be different with P0420/430. My question is, will I pass inspection or is there something else I should do to make sure I am 100% before getting the car inspected.

03-06-2024, 02:31 PM	#1 (permalink)
elhombre Base Member Join Date: Feb 2016 Location: CT Posts: 93 Drives: 2009 370z Rep Power: 145	UpRev and Inspection Hey everyone! I just had my tuner install ISR HFCs on my 09 370z. The car was throwing a P0420 for catalyst efficiency, so I thought it was a good excuse to upgrade. My tuner suggested that he could put in the O2 defoulers to keep the codes away or he could "disable" the codes (P0420/430), which he did for my P0300 code and I have had no trouble with passing inspection. I told him to just do the codes as the defoulers seem to be a hit or miss. However, I am concerned that this will be different with P0420/430. My question is, will I pass inspection or is there something else I should do to make sure I am 100% before getting the car inspected.