What Size Air Filter?

[MrPlow]

Hey guys, this is for the guys who actually know what they are talking about, and can provide me with the correct information and some facts/findings/research to back their answers/comments up...

In regards to pod air filters, does bigger mean better? I have a choice of running a few pod filters for a cold air induction type setup, now does a small filter mean it will suck it less air while a bigger filter has more area to suck in more air? My induction pipe is now a 2.5inch setup for my b16a... Do you guys suggest a larger air filter or smaller filter...

I know its a simple question but what would be the logical side of it? I plan on doing my own research as in putting both on and all that, but what do you guys recommend?

Thanks!

[Macros]

Size does not make a difference. Limiting factors are your induction pipe and throttle body. A filter is just a filter.

What you should look for is the flow properties of the filter material.

[57UDD]

I've found that it doesn't matter about the size of the pod. I've found in my case that it matters which brand pod you go for. And also something about gettin a pod that isnt open at the mouth, like covered all around except for the inlet. Sorry dont know how to explain it, hope you know what i mean.

[bennjamin]

something to think about....more surface area of a filter = more filtered air thru = less restriction/lower air pressure - well , thats a educated barble at 10am on a saturday morning lol.

Seriously steve , off the top of my head , a better setup would be a larger intake pipe thru to a medium sized airfilter ( panel might be better ) and thus to a smaller inlet ( as in , directly infront of the throttle body) - this would act like a venturi and probably aid in combustion and only get better the faster you go. ( think of a stretched cone , with a filter in the middle of it )

thats just an opinion based on what ive learnt ! Best of luck !

[MrPlow]

hmmm interesting! anything else?

[ginganggooly]

i was wanting to make a new airbox with a panel filter a while back. i've since binned the idea due to a lack of ability with power tools and welding equipment.

i think a velocity stack behind an enclosed pod or panel would be a goer.... it's dead simple, but you need to muck around to make it. i might have a hack at using fibre glass.

[bennjamin]

i was wanting to make a new airbox with a panel filter a while back. i've since binned the idea due to a lack of ability with power tools and welding equipment.

i think a velocity stack behind an enclosed pod or panel would be a goer.... it's dead simple, but you need to muck around to make it. i might have a hack at using fibre glass.


perhaps another issue is location in the engine bay itself - i have drawn up many many sketches for a velocity stack design - but from what i coudl see most would need to cut a section out of the bonnet to use properly.

Ive also mucked about with resonator style designs for low to mid end poke - a large low pressure pulse area inside basically. ( think of a simple large offset muffler used for the CAI)

its all on the drawing board i guess lol.