E30 Zone

What do people recommend, has anyone got any proven improvements etc

I've heard mixed views, so thought this would be interesting!

Keep your standard paper filter - best at filtering and gives excellent airflow when clean.. at a couple of quid a shot its soo worth it at least in the longeivity of your engine..

K&N suck ass

Jhonno wrote:Keep your standard paper filter - best at filtering and gives excellent airflow when clean.. at a couple of quid a shot its soo worth it at least in the longeivity of your engine..

Not really worried what to do on mine, just thought it would be interesting to see peoples views, although mine has actually got a k&n cone on it at the moment!!!

Comment applies to anyone

Jhonno wrote:Comment applies to anyone

Comments dont worry me matey! would like some reasons though.

as i said - best type of filter for actually filtering the air - improving the life of your engine

cheap

flow just as much air as a cone or other filter as they are folded so actually have a massive surface area

Jhonno wrote:as they are folded so actually have a massive surface area

Never thought of that... make sense!

BMC All the way!! u know somethings very good when on the Box it sais strictly for race use only! not meant for the public highway LOL




WARNING: This product is made for track usage only and is not intended by the manufacturer for use on public streets or highway.

K&N panel filters are folded..... they improve air flow over paper filters, and last forever...

so your comments are a tad unrealistic

you have to be bothered to clean them of course - the only downside

a BMC won't fit (unfortunately!!!) due to the AFM.

orangecurry wrote:K&N panel filters are folded..... they improve air flow over paper filters, and last forever...

so your comments are a tad unrealistic

you have to be bothered to clean them of course - the only downside

not at all

another one buys the bullsh*t on the box

orangecurry wrote:K&N panel filters are folded..... they improve air flow over paper filters, and last forever...

so your comments are a tad unrealistic

you have to be bothered to clean them of course - the only downside

They are no good. Totaly fuck the engine up.

A

what about an Other Panel filter option.

Im thinking of replacing my panel filter with a Green Cotton panel filter as I have heard good things about them and they are a bit cheaper than K&N

i've never heard anything bad or had a problem with k&n filters, they seem to get a lot of stick from people but i don't know why?

someone please tell me if there's a good reason!

i like cone filters because (on my cars at least) they make a lovely noise!

i have a compromise - my friend put a high performance filter on his honda integra type r, so i borrowed the old filter. it's paper and cone shaped, used to be in an airbox in the honda but i have it without a box.

sounds nice and being a stock factory honda filter im sure it's filtering properly. can buy em new for reasonable money, i checked.

I guess this arguement can go on forever, over whats better etc.

There was a post like this up a little while ago, and someone had found a very interesting site, which prooved as best the guy could, that the stock paper filter was the best.

Adam

i have K&N Panel filter, and totally recommend it

yeh why do ppl diss k&n

but yeh.... BMC CDA rules.... NOT FOR HIGHWAY USE LOL

K&N super suckers rule

as long as you can get cold air near it ive always favoured the k&n cone

Cone vs panel.
Usual trade off of cold air into airbox & panel vs. engine bay temp air into cone filter
Have tried a pipercross cone & an ITG panel in a factory airbox,
no difference from the driver's seat but maybe something would show on the rollers. Perhaps I got it wrong both times?

flow just as much air as a cone or other filter as they are folded so actually have a massive surface area

That doesn't follow at all. Surface area is only one factor - permeability would seem to be a lot more important for flow. While a paper filter may start off flowing as much air as a K&N type, elementary mathematics will tell you that a filter with smaller holes traps more particles, and so will clog up quicker. There's just no way round that one.

Of course, the downside is that one with bigger holes will let more through...

Best thing is to look for advice which is backed up by some kind of knowledge based on scientific testing, rather than emotional but meaningless "Such and such is CRAP" type statements.

I use a K&N panel.

Cone vs panel.
Usual trade off of cold air into airbox & panel vs. engine bay temp air into cone filter
Have tried a pipercross cone & an ITG panel in a factory airbox,
no difference from the driver's seat but maybe something would show on the rollers. Perhaps I got it wrong both times?

Karan wrote:yeh why do ppl diss k&n

cause they dont work.

A

Toby_Unna wrote:i've never heard anything bad or had a problem with k&n filters, they seem to get a lot of stick from people but i don't know why?

someone please tell me if there's a good reason!

i like cone filters because (on my cars at least) they make a lovely noise!

i have a compromise - my friend put a high performance filter on his honda integra type r, so i borrowed the old filter. it's paper and cone shaped, used to be in an airbox in the honda but i have it without a box.

sounds nice and being a stock factory honda filter im sure it's filtering properly. can buy em new for reasonable money, i checked.

S2000 is the same, but i dont see the point of it?

A

I have cleaned a K&N before and re oiled with the proper K&N oil, obviously cleans the filter, but what is the oil for???

Demlotcrew wrote:

Karan wrote:yeh why do ppl diss k&n

cause they dont work.

A

show me the proof.......

I'm a K&N panel filter fan , thats whats in my 325 touring turd, mind you it was free, i found it in a scrapyard turd and slipped it into my box (ooh err). Some hero must have done a dyno run , testing all the options. I personally think the cone type filters would come out worse unless a proper cold air source has been utilized and the filter isolated from engine bay heat.

Demlotcrew wrote:

Toby_Unna wrote:i've never heard anything bad or had a problem with k&n filters, they seem to get a lot of stick from people but i don't know why?

someone please tell me if there's a good reason!

i like cone filters because (on my cars at least) they make a lovely noise!

i have a compromise - my friend put a high performance filter on his honda integra type r, so i borrowed the old filter. it's paper and cone shaped, used to be in an airbox in the honda but i have it without a box.

sounds nice and being a stock factory honda filter im sure it's filtering properly. can buy em new for reasonable money, i checked.

S2000 is the same, but i dont see the point of it?

A

my opinion only of course... but it makes the engine sound nicer than with an airbox installed, filters as completely as with an airbox installed, and power feels better than when i had an air box on it - which isn't surprising as it's a very large cone with a ducted cold air feed from the front of the car.

so what bit don't you understand?

Demlotcrew wrote:
cause they dont work.

A

that's a pretty useful statement to add to the debate

as i said before, i'm interested if there's a scientific reason or scientific backing.

i hate air filter debates.....

Toby_Unna wrote:
as i said before, i'm interested if there's a scientific reason or scientific backing.

how do you think they claim they can flow more? by having a more open surface therefore letting more 'stuff' through..

yep u need a roller to settle this

Jhonno wrote:

Toby_Unna wrote:
as i said before, i'm interested if there's a scientific reason or scientific backing.

how do you think they claim they can flow more? by having a more open surface therefore letting more 'stuff' through..

yeh but i think the oiled aspect improves this.....

uve gotta ask ureself how much particulates is harmful.... and how much is being anal

yeah that is why you have to oil them.. they'd be worse without!

anal.. depends how finely tuned your lump is.. a race engine it makes a massive difference to life, a boring run of the mill lump less so

Karan wrote:i hate air filter debates.....

Sorry!!