PO420 Exhaust Code?

jran76 · 05-19-2011, 10:53 PM

Quote:

Originally Posted by edub370

i have test pipes on my car and have not seen a check engine light yet. i didn't put them on so idk which brand they are, but are there certain brands or styles that will throw codes and certain ones that wont?

In general, the longer the O2 extender is, the less likely it is to throw the fault/light (the O2 has a longer path to travel to the sensor). I don't think it is really brand specific as much as the design/length of the extender that the O2 sensor plugs into. Really, if you are running test pipes or LTH, you should get a tune. As mentioned, UpRev (and Cobb) will allow you to turn this fault off altogether, and you will be able to take full advantage of the increased breathing.

edub370 · 05-23-2011, 11:50 AM

Quote:

Originally Posted by jran76

As mentioned, UpRev (and Cobb) will allow you to turn this fault off altogether, and you will be able to take full advantage of the increased breathing.

Does cobb still do stuff for our cars? i heard a rumor somewhere that they stopped doing tunes and such for the z (i could be wrong). Also, if i get a tuner, do i have to get some sort of custom map for test pipes or do some already have test pipe maps loaded?

jran76 · 05-24-2011, 05:32 PM

Quote:

Originally Posted by edub370

Does cobb still do stuff for our cars? i heard a rumor somewhere that they stopped doing tunes and such for the z (i could be wrong). Also, if i get a tuner, do i have to get some sort of custom map for test pipes or do some already have test pipe maps loaded?

No, they don't support the VQ35/37 anymore. They have stopped doing support for all N/A applications. Yes, they suck.... With that said, you can still get it tuned and such by a pro-tuner in most cases, but there will be no support from Cobb or future enhancements. The AccessPort should come with a Stage 2 map that is designed for TP or HFC and disables the cat efficiency error code, but a custom tune is always better.

What you see is what you get at this point with the AccessPort. I have a Cobb shop local to me, and they will still tune it for me. I am still going to UpRev as soon as I have a reason to (need for a new tune....), and I would recommend the same for anyone looking for a tune at this point.

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