CEL P0420 Test Pipe / HFC - Non-foulers

The G-Series Tuning Forum is the place to discuss G35/G37 performance modifications and mechanical repair.
omg35s
Posts: 2
Joined: Mon Jan 24, 2011 8:02 pm
Car: 2007 Infiniti G35s 6mt

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My shop installed GTM RTP's on my 2007 g35s and unfortunately even with the extended o2 J-Bung my car is throwing CEL P0420.

I wonder why it's throwing only P0420, which is the passengers side and not P0430 which is the drivers side?

Berk and GTM were kind enough to explain that both these codes do not affect performance.

Berk has recommended to use stainless steel wool and maybe purchase non-foulers. Where is everyone buying these parts from? Links are appreciated.

Anyone else running this code with their RTP/HFC? What was your solution/experience?

I was also worried that maybe my o2 sensors were bad so I pulled some live data from my OBII scanner:

O2S B1 S1 (V) 0.445
O2S B1 S2 (V) 0.280

O2S B2 S1 (V) 0.900
O2S B2 S2 (V) 0.290

Does this look right?

Thanks!


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Q451990
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I'm going to move your post over to the G forum... I suspect it'll get more responses there.

Good luck!

Heath

joe603
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Car: 2014 Durango R/T
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Welcome to NICO! I'll let one of our techs answer that one...

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audtatious
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It seems to be common when using test pipes that one of the O2's sense more air and throw a code (my HFC's have been error free). I looked around and didn't find any how-to's here but I did find this cheap fix detailed:

http://www.355nation.net/forum/how-perf ... -pics.html

If you do this, please document it and detail it for the community.

Thanks and welcome to NICO


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