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CEL P0420 Questions/help

 
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CEL P0420 Questions/help
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CCVWGTI



Joined: 13 Jun 2009
Posts: 7


Location: Warner Robins

Post CEL P0420 Questions/help  Reply with quote
Anyone have VAG COM handy. I just put an APR RSC exhaust on my MKV GTI. I am recieving the P0420 code on my CEL and I dont want my car to go into lip mode. Has anyone had this problem with putting an exhuast on there car and what was the fix? I researched it a bit and i think I am going to have to mode my last o2 senser after the Cat. Any ideas?

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06 Black Magic MKV GTI: Neuspeed P-Flow Intake/ Forge DV and Spacer/ APR Stg 1 ECU
Mon Sep 14, 2009 9:21 pm View user's profile Send private message
stuston
Senior Member


Joined: 23 Jun 2007
Posts: 761


Location: Macon, GA

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Might just be the O2 is located in the wrong place where the gas is too turbulent.  I have read that the O2 spacers available at some parts stores will solve that problem -- it's just a little extention that puts the tip of the sensor out of the direct exhaust stream, but you have to have some clearance for it.



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1992 MkII Jetta GL 8V

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Vortex Posts
Tue Sep 15, 2009 2:18 pm View user's profile Send private message
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