filter on top of air box

[B-rad]

wondering if removing the factory built in air filter on the top of air box will help my milage or possibly hurt the engine?

[WeeYari]

Slight improvement to f/e.

However, that upper filter is a CARB requirement. Being in Cali, I'm not sure you'd pass inspection with it removed. From what I understand, inspection is a pretty anal issue down there.

[daf62757]

Do you mean the filter that is behind the passenger side bottom glove box?

[WeeYari]

No. In the air intake there are two filters. A white fiber filter that sits on the lower portion of the air box, and a permanently affixed black charcoal filter attached to the upper part. He is talking about the charcoal filter.

[daf62757]

So if you remove the carbon filter you get better mileage?

[B-rad]

yes the black carbon filter, its looks like its quite air restrictive.
iam wondering how the smog police would know i removed it and if the engine would still run properly?

[auxmike]

I'm guessing it's just to hold in fuel vapors after the engine shuts down. Mabye without it there would be a gas smell....

[Uber_Otter]

I pulled mine out of my Xa, big improvement in flow. Very noticable at the top of the rpm range. I broke it pulling it, you can dremel it out carefully and be able to put it back. It blocks noise as well, so now there is more of a growl out of the front. No gas fumes noticed. Not sure on MPG. I know it did not go down.

[ilikerice]

pulled mine out also.. mine was easily pulled off.. no damage.

[daf62757]

yes the black carbon filter, its looks like its quite air restrictive.
iam wondering how the smog police would know i removed it and if the engine would still run properly?

The Obama EPA will crucify you for that. You have admitted publicly to defiling a clean air system. You will be punished for your sin!