OBX without non-fouler

br289165

Member
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'02 P5/2 Audi A4s
What will happen if I run the car with O2's on an OBX header, no cats (NA) without a non-fouler, besides getting a CEL?
 
nothing. the only reason the cel comes on is because it doesn't detect the catalytic converter anymore because it isn't there
 
I'll let ya know in about two weeks. I plan on doing this setup soon.
 
had one on, changed to AWR pan an there's no clearance for sensor with the nonfouler, just wanted to start the car up before I install a Microtech to make sure everything's running fine and wondered what might happen if I ran it. Put on this O2 elbow mount that the dude on here told me about from ebay and it made it so everything fits great, ran it that way.


nothing, just CEL and probably bad gas mileage
why would you not put the non fouler in? its freakin easy
 
br289--If you have to pass a "sniffer" emissions test in MI, it won't. Not without a cat.
 
I just re-read this, sorry mate. I thought you said WITH a non-fouler. I have a header and now catless and no CEL, but I have the non-fouler installed.
 
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