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2000 Chevrolet Silverado with K & N Air Filter will it pass smog test?

I have a K & N Air Filter system in my Chevy Silverado truck, will that affect me passing smog check?
Answer:

The K & N Air Filter alone will not affect your pick up truck from passing the smog inspection. If the air filter "housing" is changed, that might. But the air filter itself will not cause a smog inspection failure. Sometimes vehicle owners change the filter AND the housing; with a housing not approved for use in California. These air filter housings are usually missing certain PCV connection points; which the vehicle owners will plug up. These types of air filter housings built for Chevy trucks are not California approved or certified and will cause a smog check failure. But if all you've done is installed a K&N Air Filter in your Chevrolet Silverado's factory air filter housing your pickup truck will not fail the smog check because of it. posted by SmogTips Support

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