Hey,

I recently discovered that my street NSR has been running with no airfilter, and I'm wondering what the optimum airbox/filter setup is for street use. I have done a search but not found any conclusive (this is better than that) info.

As I see it the filter options are: (From past threads)

1. Stock
2. Daytona Turbo Filter
3. Uni Filter
4. Ramax Filter (Pod)
5. K&N Filter (Pod)

And for the airbox:

1. No airbox (Pods only)
2. No Lid
3. Holes in Lid
4. HRC box ('simular' to no lid)


What I want to know is which setup (with a filter of some sort) will give you the best performance. I have heard things like the number (area) of holes is important, suggesting no lid is not the best. And that Pod filters reduce the midrange. I have had a mechanical engineer tell me that you need the airbox as it is designed to resonate and effectively rams more air in, suggesting that it does more than maintain 'still air' as mentioned before. Tygas airbox lid keeps most of the lid intact and seems to be a standard lid with enlarged intake holes, which I have also heard people do.

With out too much flaming, it would be great if people could come forth with all their knowledge on the subject in the attempt to compile a conclusive thread that everyone can benefit from.