Hey guys i just got my k&n panel filter yesterday and when i put it in i noticed there is like another filter in the lid of the stock airbox? does anyone know what this is and how to remove it seems like it would just defeat the purpose of the k&n. i tried prying it out but it wouldn't budge do you have to break it to get it out? and if you take it out will it hurt anything? (ie check engine lights, ect.) thanks in advance!

 

It's there for emissions reasons, I took mine out about a month after purchasing the xB2. You have to put some muscle into it put it will eventually come off. Stick with a paper or dry-flow filter (like AEM), K&N filters are junk.

 

Get a fladheat and pry where you see the rivet things.

 

*flathead* lmao

 

Honest question, not trying to be smart. How does that screen help with emissions?

 

Something about our vehicles having a returnless fuel system, and the charcoal filter is there to catch any gases emitted after the vehicle is turned off (reason why the TRD CAI is the only "legal" intake for the xB2).

Just seemed like a restriction to me so I took it out. It won't throw a code or anything if it's missing so it's not a big deal IMO.

 

I drilled the rivets out when I installed my TRD Hi-Flo filter. Seemed to me it was going to cancel out most of the benefit of having a Hi-Flo.

 

Would removing that filter and installing just a AEM dry flow panel be a good investment. The AEM intake is quite costly for a small amount of HP.

I wonder if you gain any HP by dumping the 2nd filter.

 

Just pulled it out. Used a razor knife to cut out the white easily, then popped the plastic sides loose.

 

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