2007 Infiniti G35s 6mt Sedan

Inspection is coming up and I need some advice!

Exhaust set-up = Stillen Catback Exhaust with GTM Resonated Test Pipes.

Car is throwing codes P0420 & P0430, which is common for HFC/TP's. My GTM RTP's have the extended J-Bung for the rear o2 extenders but it didn't help and my car still throws the codes.

I put in some steel wool (2" long 1" diameter) into the J-Bung yesterday and it still throws the codes. It didn't take that much force or effort to insert the steel wool but it did seem rather secure? I'm thinking about adding some more steel wool? How much is too much and how little is too little?

I can't add any extenders because there is no room due to the already extended J-Bung of the GTM RTP'.

Seems like my options are going back to stock cats if the steel wool doesn't work?

Anyone know of any friendly inspection shops in NY?

Thanks!

 

No damage to the O2 sensors right?
Have you reset the original code? If not you can remove the ground from the battery for about 30 mins and it should reset.

 

Sensors should be good. I have a good obd ii scanner and everything checks out fine. I reset the codes they come back after some highway driving.

 

I managed to pass inspection today! After a lot of trial and error with steel wool, obdii scanner, Factory Service Manual and driving techniques, my car did not throw any codes.

Thanks again for the feedback.

 

Throw some steel wool inside of the bungs. Mine threw a code after a year of no issues. Threw the wool in them and the light went away.

 

I resort to doing the pedal ECU reset everytime i get a code. Honestly its more for looks than anything, as having the light on bothers me, my state doesnt do inspections and the emissions testing is only every 4 years so I'm good in that regard. out of curiosity what do people with test pipes do for emissions testing?

 

Take them off lol