what is better...

[Scott Sewell]

not sure how spell these but, pipercross or k&n air filter thing??? going to get one but don't no which one

 

[TeZ]

ITG.

 

[-Leigh-]

If you're on about induction kits, they're both as bad as each other. You will lose about 1 or 2 bhp from sucking in lovely warm air from the engine bay.

 

[FlameR]

if your on about panel filters, as TeZ says, ITG would be the best option

 

[Monkey_beast_182]

If you're on about induction kits, they're both as bad as each other. You will lose about 1 or 2 bhp from sucking in lovely warm air from the engine bay.

Agree totally. I'm in the process of making a nice customer Aluminium enclosure for my K&N 57i. Yes, I know I should buy a purpose made one, but I'm a little tight for cash at the moment!

 

[Scott Sewell]

cheers for the advice, what is the best performance exhaust as well

 

[FlameR]

depends on which car you have?

 

[Scott Sewell]

depends on which car you have?

1.2 16v extreme4 05 plate

 

[Monkey_beast_182]

I doubt you'd get much difference in power on a 1.2 mate, even if it is a 16v!

Airflow only really improves bigger lumps - that's where the chavs fall down.

 

[-Leigh-]

The most effective way to spend money on your car, would be to save it in a high interest account towards a quicker car in a year or so.

People in 1.2's with big exhausts and induction kits just look silly, as you hear the car coming, then see it crawling past at about 30mph.

 

[Monkey_beast_182]

^^^ what he said!

 

[youngsyp]

not sure how spell these but, pipercross or k&n air filter thing??? going to get one but don't no which one

To answer your title question, the K&N.
Technically, foam filters are inferior, both in terms of filtration and flow, when compared to pleated cotton air filters.