Alright I have an 06 Touring Z, and so does my Brother. We both recently replaced our cats with test pipes. I installed the non foulers on both of our vehicles. At first I thought it was fine, then about 60 miles laters my Cel cam on. His came on then as well around the same milage. Howcome the Cel is still coming on with the non foulers in place (I did exactly like the writeup said, 2 non foulers each side, drill one out, screw em together and be done)? I took it to a buddy at autozone to clear it maybe thinking it was a freak thing. He clears it, and the cel came back on again about 10-15 miles later. He also said the code for both vehicles was reading, O2 sensors heater circuit below threshold or something like that. So does anyone know what I could do to get the Cel to turn off? Maybe more non foulers? All help is greatly appreciated....TIA

 

lol i was jus about to ask if i can put these pipes on an 06. ill be waiting for the answer on this one

 

haha yea man, I am at a loss as to why they are still throwing the code so hopefully someone on here knows why.

 

Interesting, I wonder if any other rev-up owners have this problem.

 

ive got test pipes with non foulers on my car for about half a year now and never seen a light on once. the guys at fast intentions did it for me...

 

Is your car a revup motor? If it is, is it just the 2 non foulers on each side? Im really at a loss for this matter, nothing big, but I would prefer to have the CeL removed.

 

I have a REVUP motor and put non-foulers/test pipes the first week I had the car. You should reset your ecu and have two non foulers on each bank. If you still have a code, you may have damaged your o2 sensor by not installing it correctly.

 

yes, mine is the 06 revup as well. i'd take a look to see if the non foulers are damaged or defective or just installed incorrectly. be sure to reset your ecu as well. good luck

 

When you say reset the ecu, are you meaning just unplug the battery, or do i need to go thru that long process where you gotta tap the peddle and wat not?

 

Either way should reset the CEL. The pedal method is a "diagnostic reset" so it only deletes the CEL codes without resetting any other ECU stuff.

The battery-disconnect-overnight will reset all ECU parameters including learned fuel values and any CEL codes.

Although you might get the CEL again, after startup... even if you erase the code. who knows. I guess this is the risk associated with test pipes: the car thinks it is putting out dirty emissions (which it is).

 

You can either do the technosquare reset (throttle tap procedure) or disconnect your battery for half an hour and press the brakes to drain all the elctricity from the battery for a few minutes. Both do the same thing.

 

A.) you either switched the order of the drilled/un-drilled non-fouler
or
B.) damaged an O2 sensor by not installing it properly

 

my order for the non foulers go as follows. Test pipes - non drilled fouler - drilled fouler - o2 sensor. Is that right? I seriously doubt that i damged sensors on both cars. I was carefull removing them and had them protected the whole time i was doin the installs.

 

I have an 04, and had the same problem. Installed Helix TP's with non-foulers. They were fine for around 50-60 miles, then the CEL came on. Reset, 50 more miles, CEL again.

Oh well, I ended up taking them off anyway... I decided I just can't live with hearing that rattly hissing noise from HFC's or TP's every day... made my car sound like it was partly broken.

 

bump, anyone else?

 

+1

I also had it on for about 1000 miles on my stock exhaust although i don't get it anymore. It seems to be more effective on aftermarket, free-r flowing exhausts but it should do the trick on OEM anyways.

 

Oh yea, howcome the clear from autozone dosnet work? Forgot to ask that earlier. Well im headin to AAM in about 3 weeks for a reflash Ill have to have them look at the sensors then and let me know.

 

why dont u go to autozone and scan the code (free) to make sure its caused by testpipe and not something else. The test pipe might be causing u run really lean. I would check the code.

 

I did that already, the code said like I said in the 1st post is o2 sensor heater circuit below range or somethin like that.

 

I had that same exact code but I didn't have test pipes. What happened was I wired my radar detector in and in the process of putting fuses back I placed the O2 fuse in the wrong place. After some head scratching I got it fixed. I just didn't see anyone recomend checking the easiest place to check and thought I'd throw it out there.