dz302

I removed the airbox lid last night to inspect and clean my air filter when I noticed there appears to be a secondary filter mounted in the airbox lid. I tried to gently pry it out but it seems pretty tight.

Before I proceeded any further I thought I would ask here. I did a search but didn't find anything.

Thanks.

HeathenBrewing

Leave it alone. It is part of the emmissions system.

dz302

Ok, thanks.

dz302

That brings up an interesting question: If it's part of the emissions system, what happens when you remove the stock intake to install a CAI?

HeathenBrewing

You wont pass the emissions test.

But dont worry about it unless you live in CA.

SciontCya

I think it's got charcoal inside.

mengsta

yeah its that charcoal element. People say removing the charcoal element with the resonator and the funnel into the fender improves feel. but thats them.

HeathenBrewing

It does not hurt performance and removing it will provide no gains.

The charcoal accepts and releases hydrocarbons readily. When you turn off the engine and some intake valves are open and some unburned fuel remains in the cylinder, it migrates out the open intake. These are emissions and are measured when the car is certified. The charcoal absorbs the unburned hydrocarbons and holds them till you restart the engine and then they are pulled back into the engine to be burned.

dz302

I would only be interested in removing it if it provided any gains either performance wise or fuel economy. I don't like to remove things just for the sake of removal. I thought maybe if it let the engine breath a bit better then what the heck.

HeathenBrewing

Theres 20 or so topics on this website discussing this very same topic.

Search = good.

dz302

I did search for air cleaners and ended up with a zillion possible threads. I searched through many of them but didn't find anything pertaining to this exact subject.

Thanks for the reminder.

Search = not always works

SciontCya

Yeah, the SEARCH function here blows...

HeathenBrewing

Actually, the search feature is quite good, but one must be smarter than the search feature for it to work correctly.

I typed:

"charcoal filter" airbox

and got back 4 hits. I dont think that is too much to sort through to find the answer to a question.

HeathenBrewing

http://www.google.com/search?source=...rch+engines%22

SciontCya

Well, we're no match for your brains...

HeathenBrewing

Haha...say what you like, but the mass exodus from this site has a lot to do with people asking the same questions over and over and over and......

SciontCya

NO, it's the crappy software, the same look for years, and the crappy search function.
Also, lots of tools here, but that's OK with me.

dz302

Well thanks for the compliment.

Seriously, I ask a question and get sarcasm in spades. I ask you this: How was I supposed to search for "charcoal filter" when I didn't know it was a charcoal filter before I even asked my question??? See, not having that bit of information when searching is what led to so many threads in my search.

I like this forum for it's information but I have to say I have been chided more times for nonsensical things than I have in over 7 years on other forums.

You could go to Delphi Forums' Road Star Riders or just about any other forum and ask a basic question and you know what happens? Folks just answer them for you out of pure courtesy.

I used the darned search function and was overwhelmed with it's results. I had no idea that asking this question would have this result.

I might add, if you see the title of the thread and you know it's a question that's been asked so much, just avoid it.

Peace out.

SciontCya

Jim, ignore it.
I do.
Well, kinda.
There's always a smartass around the corner.

dz302

I will, thanks.