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Forum > Failed Smog Test > Question

2003 PT Cruiser failed smog test due to installed K & N Air filter assembly.

My 2003 failed smog test due to installed K & N Air filter assembly for my pt curser GT with Eo D5161 data plate. Is the filter legal?
Answer:

You'll need to check with K & N on this matter. Most K & N filters ARE California smog check legal, however a few super high performance models are not. These models include those which having missing vacuum line connections, missing emission sensor mounting locations (such as the IAT - Intake Air Temp), and/or missing additional plumbing. posted by SmogTips Support

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