midnight_7

lets assume we're talking all K&N's here.

what makes a cone filter better then the OEM replacement? ive heard some say that its better coz of the larger area of possible air input as opposed to a flat OEM replacemet. correct me if im wrong or add to my reasoning.

if that being said is true....lets assume so. provided a replacement element receives the max. potential amount of air possible, is a cone filter still going to be better?

heres what i was thinking:

while doing the search on it, ive concluded that most of you agree that the OEM air duct on top of the rad doesnt supply enough air to the box. whether u drop a replecement in or connect it to a cold air box with a cone in it.

so i thought of custom making an air duct feeding either the stock box (with a K&N replacement) or a cold air box (with a cone) then piping it through that cross member holding the rad down low enough to suck up fresh air.

so if i was to do that, would there still be an advantage to the cone filter?

Carlos

p.s. - how does extending the pipe of an air intake increase low end TQ? also, if i did my idea (piped it so air comes in from just beneath the bumper) does that still have the same effect as extending the cone filter to that location...thus increasing abit of the low end?

NZConvertible

There is basically no performance increase from swapping the filter in the stock airbox. The marketers from K&N will tell you it makes a huge improvement, but real world testing has proven the nearly all the restriction in stock airboxes comes from the box itself (principally the inlet and outlet) and not the filter. The measured pressure drop across the fiter (indicating its restriction) is always a tiny fraction of the overall pressure drop through the entire intake system. Even if a K&N filter poses half the restriction of the stock filter, half of something very small is still something very small.

The reason a pod filter improves performance is that is poses far less restriction that the stock airbox. However a big chuck of those gains is usually lost by leaving the filter exposed in the engine bay to suck in air heated up as it passes through the radiator. A proper pod filter install includes a heat shield and cold air duct to ensure only air at ambient temp is inhaled.

RETed

If you take a cone filter and flatten all it's pleats, you'll understand how it can get more air into the engine.

Look at the stock air box exit into the airflow meter.  It's not even large enough to stick your hand in it.  This is why replacement panel filters don't do very much for the FC.

Longer intake induce better intake velocity.  Normally this would mean better low end, cause of better fuel atomization, but in a rotary engine it means very little due to the engine dynamics.


-Ted