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bored smog tech here
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06-21-2008, 11:20 AM
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ryguy
Zilvia FREAK!
Join Date: Oct 2006
Location: Chicago Suburbs
Age: 35
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Dear Mr. Smog Tech,
My S13 failed NOx last week. Is it likely that it failed because of my 3" exhaust? I have heard that the lack of backpressure doesnt let the EGR operate properly. Any insight into this?
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