While I was exploring the option of buying a after market piping kit so i could install a BOV, I did a little poking under the hood and decided to try something different. I wasn't looking for a cooler sound, just a louder blast. This Is what I came up with.
What you need:
- one 3" cone filter. (whatever brand you prefer really.)
- 1 aluminum bracket (I bought a Vibrant performance one.)
- 4 6mm nuts w/ bolts
- screwdriver
- wratchet
- about $50 (total bill of what I paid for the materials)
- maybe 20 minutes of spare time.
I also bought some 3" aluminum piping. Turned out I didn't need it but I might use it for something later.
Removing the air box, make sure you unplug the MAF sensor. It's clipped on to the side of the box (just below where it plugs into the MAF) as well so you'll need to unclip it there too.
Once the box is removed you'll need to attach the metal bracket (comes with a rubber gasket) to the MAF unit.
Then attach the cone filter with hose clamp and reconnect the MAF sensor and your done. The cone should be just underneath the hood vent, If you want to buy a sock for it it's up to you I've had no problems with moisture on the filter while washing or driving in rain.
Vent with hood closed...
I don't really know if anyone else with a JDM has done this or not. I noticed some differences once this was done. The sound of the turbo spooling is a lot more noticeable, the recirc-valve blast is louder as it's not resonating through to the wheel well anymore, and (this may just be in my head though) it seems the turbo starts spooling at a sooner RPM.
Hope this helps some people. Don't laugh at the wingnuts! LOL! I couldn't find any 6mm hex nuts, i'll switch them eventually!