I have an 06 revup with test pipes and the non fouler trick on them. Still get a Cel and my bro who has an 06 revup as well and test pipes throws a Cel also. My question is do any of you other 06 or 35th revup have test pipe with the non foulers and throw a cel or is there just something wrong with the way i could have installed them? Also ive resest the ECU and did all that and it still come back. And it is a Cel for the rear o2 sensors so i know that it has to do with the test pipes.

 

I did the fouler trick to my 06 and have not seen the CEL light since... Are you running 2 foulers on each tp or just one?

 

Yea im running both on the 2 cars, used lock tight, and made sure to be very careful with the sensors. So I dont know why theyre doing it.

 

When these threads come up and the problem is persistent this way, I have yet to read of anyone actually solving it. It seems to be a hit or miss as whether it will work or not on the 06'.
I think thats why I ended up finally making the descision to go with HFC's instead.

But when you think about it, you really have no purpose for the sensor anymore because you ARE running dirty. Is it possible to just turn off that particular warning?

 

Of course you know that the first set of sensors are pre-catalytic converters, an the second set post-catalytic converters. The ECU compares the results of the two. I can see no difference between any of the 350Z motors. Sorry.

 

I've posted this a dozen times: The non-foulers work - sometimes. My experience has been on a Sentra, and whereas some guys never got a CEL with test pipes, I got one after 50 miles and then after 600 miles. I removed and cleaned the O2 sensor, and after the second time, it didn't do it for several thousand miles (until I sold it). I also cruised other forums for the same subject, and noticed that it was hit and miss on other cars as well. As far as disabling that function in the future, maybe the new Cobb tuner will have that feature.

 

Alright guys thanks for the replys so far, I guess it is just a hit and miss thing. And as undrgnd stated, hopefully Cobb's acessport wil have a disabling feature on it.

 

You probably thought of this, but did you double check to make sure the CEL is due to the test pipes and not some other problem?

And you've reset the ECU?

Again, I'm sure you've thought of it, but if not, well, hope it helps

 

YEa I checked twice with a scanner and it is caused by the test pipes. THats the 1st thing I did, so reason for the thread. Sry for not mentioning that originally. Anyway if anyone else knows if theres a better way to stop it im all ears. Thanks

 

you may have a crack on your testpipe . check it out carefully.

 

Did you install new gaskets with the test pipes? If not, it's marginally possible that you have a leak, and the post-cat sensors are registering too much O2.

Or, you might have a leak around the non-foulers, or around the threads of the O2 sensors.

 

i bought the 02 simulators on ebay, worked for me.

 

jtgli, I think I am having the same problem with my test pipes. The codes I am getting are P0420 -- Catalyst System Efficiency Below Threshold (Bank 1)and P0430 -- Catalyst System Efficiency Below Threshold (Bank 2). I really hope that the Cobb's acessport will fix this problem.

 

Hey ml2000 thats the exact same codes Im getting. And yes I changed the gaskets and have checked for leaks. All negative.

 

I thinks its an 06 thing, maybe someone will find a fix because that CEL light is getting annoying.

 

It may be the sealant you are using near the O2 sensor. When this stuff burns it fouls up the O2 sensors.

The people without a problem probably didn't use any type of sealent. This is from my experience with other Nissan's (SE-R's)

 

I didn't use any type of sealant and I don't have a CEL. You shouldn't have used lock tight, the chemicals do damage the o2 sensors. If you reset the light and it comes back instantly then the problem are your o2 sensors.

If it comes back a little later then, you either have a leak somewhere or you have done something incorrectly. Did both you and your brother use the lock tight?

 

97supratt, my CEL came on about 50 miles after the test pipes were installed and after 200 miles turned off. It stayed off for around 500 mile and as I was driving home from Atlanta it came on again. The test pipes were installed by Forged Performance so I know the install was done right.

Matt

 

I have an 05 Track(revup) with testpipes and non foulers and I still get a CEL.

 

Is the o2 sensor touching the non fouler? If it is then there is your problem. I suggest removing the o2 sensor and the non foulers. Tighten the o2 sensor onto the non foulers and look at the end of the non fouler. If you drilled the non fouler incorrectly, then your o2 sensor will have problems detecting the correct amount of gases.