42DD downpipe and failed catalyst monitoring for emissions
Thread Starter
Audiworld Junior Member
Joined: Jul 2006
Posts: 67
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42DD downpipe and failed catalyst monitoring for emissions
Just wanted to see if anyone ran into a problem with the 42 draft designs 3" downpipe with their street catalytic converter on a 225QC. I can't pass emission tests because everything says ready except for my catalyst monitoring which reads "failed or incomplete"
I have no codes when i vag and no CEL so i'm wondering what the problem may be.
Thanks in advance for any ideas.
I have no codes when i vag and no CEL so i'm wondering what the problem may be.
Thanks in advance for any ideas.
Last edited by RemixTT; Apr 23, 2011 at 12:12 PM. Reason: clarification
AudiWorld Senior Member
Joined: Oct 2000
Posts: 1,585
Likes: 3
Just wanted to see if anyone ran into a problem with the 42 draft designs 3" downpipe with their street catalytic converter on a 225QC. I can't pass emission tests because everything says ready except for my catalyst monitoring which reads "failed or incomplete"
I have no codes when i vag and no CEL so i'm wondering what the problem may be.
Thanks in advance for any ideas.
I have no codes when i vag and no CEL so i'm wondering what the problem may be.
Thanks in advance for any ideas.
Your issue may be with the car/computer than the downpipe.
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