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post Apr 1, 2007 - 3:36 PM
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Redline08



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If I put stainless steel 4-1 headers on my 99 celica gt, will it still pass inspection? (emission problem?)
 
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post Apr 12, 2007 - 11:01 PM
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kcizzle



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This is exactly the question I was looking for, I just got my 4-1 header and haven't installed it yet. I believe I got the two O2 sensors on the primary cat and I checked straight down and I saw a secondary cat. So if I installed my header and removed the primary cat but still have the secondary one, what are my chances of passing emissions? Has anyone tried having this set-up and take the test? I am from Illinois by the way. Sorry for jacking but appreciate your thoughts.

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