I just bought an AEM CAI and I plan on installing it tomorrow. When I got everything out, I am missing the " Vacuum hose filter" Part # 21-300. Has anyone done this install, and how important is that part. It said in the instructions, it is for the VTEC system, which I have.
JIM

 

I think some people just put a piece of soft foamy sponge in there. Search around and I'm sure you'll find an answer. There was a thread just recently on this.

https://www.honda-acura.net/forums/s...d.php?t=145457

 

for the f22b1, you don't use it. at least i didn't. there was no place to use that foam piece anyways.

 

same thing happened on my friend's '95...no place to use it.

 

It said in the instructions that it was for the VTEC. It said that it wasn't used on a non-VTEC car. IS that was your guys have? I just don't want to go through and install it to find out I need that piece, and can' drive my car... Any help is greatly appreciated
-=JIM=-

 

i have an ex/vtec

 

AEM INTAKE INSTALLED!
You guys were right about the filter...didn't need it at all. You wonder why they even have you go through the trouble...

 

but i would put it in the vacuum thing so that dirt wouldnt get inside, i looked at my filter piece i inserted and its pretty dirty. glad we could help though!