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Have an 06 Si and looking for headers but also need to be smog compliant. I'll run a defouler on the rear O2 but I'm curious if anyone has passed a smog test with aftermarket headers, defouler and high flow cat.

I'm in Nevada and we have yearly smog checks; replacing the stock manifold every year would be annoying.

My budget is $1500 for headers.
 

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As long as you have no CEL and they don't look under the car, you will pass. This is the case if they only do an OBD test.
 
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