Airbox - Open Top/Sides Vs Closed

[freeze_dk]

I took the base off my airbox 1 weekend and taped my panel filter to the lid.. Only difference I noticed was really deep flutter and the car was really gutless..

[bjc]

remove lid from base so no filter and its easy 10kw atw's with boost coming on earlier.

[FAST-XR]

leave the bottom half of the air box on, just cut out the front face and the passenger side of the lower part of the air box, itll get all the air it needs....

[mrmackie]

You def DONT want to have the top side (Bonnet) side of any Airbox uncovered. This will allow hot air to be sucked in from the engine bay into the turb. I made a custom airbox for a SSS pulsar I had and ran a pod filter, Then tried with and without the top of the box. When I had the lid off the fuel economy was $hit! It performed much better with only the air intake from the front (Headlight) open.

I did see someone with a XR6T run both front entry and under the airbox (picking up from the guard) and they said it worked quite well. They were running a panel filter.

[XtRmn8]

Tocchi, you idea look very similar to the BPR air box that they have had a lot of success with. They seem to be very popular with Boss owners and a few Turbo owners praise it too. I am in the process of making one myself.

Here is what the BPR airbox looks like.

I am not 100% sure what exact filter they use but I know that it has a 4" intake and is about 9-10" long. It could be K&N Part RE-0870.