Roygarth

Will a K&N air filter make any difference?

Car is a 1990 C2.

Thanks.

964russ

Ive got one on my car, i think it does very little if anything to performance.

jimq

it saves weight as your wallet gets lighter

boxsey911

This thread is worth a read:

https://rennlist.com/forums/964-forum/277537-air-intake-temperatures-with-a-cup-drilled-airbox-versus-a-stock-airbox.html

Indycam

After I read of oil samples having bad reports from K&N filters , I will never use one .

anto1150

More air = lean carburation = even lower performance.

BUT, if you remap your eprom giving your engine the extra gas it needs, you' ll notice the promised difference.

Oracle

Total waste of money in my opinion. Big thing for juvenile crowd. enough said.

Wachuko

I have one if you want it... I am sticking with factory filters....

EDIT - London... shipping will cost more than the filter....

elbeee964

Paper fails conservatively with age by becoming a 'tighter' filtering agent (passages become plugged with particles).

Oiled films OTOH fail (by drying out) by allowing more and more through.

A dry K&N is not the same as your dry paper. Dry K&N 'media' (foam) will allow everything short of sand to get through.

Pass.

[-- doh!]
But JAIME'S is different! [secret wink thrown to Jaime]
His is Great.
Buy it, keep it well cleaned and oiled and I promise, life will be Golden.

dfinnegan

Actually, sand is exactly what gets through! You can have mine, too. I'm running with paper - and keeping my eye out for those who run with scissors! :-)

ducnine

I was planning on ditching my K&N too. My car hesitates a bit upon hard acceleration and the mechanic though it could be because of that. Maybe it is..maybe not...either way quick winter project.

Fortunatly the Previous Owner gave me the stock airbox.

J richard

Ok for the track if you don't have a dirty track or run out into the kitty litter too often, but not for the street...I ran one for a while that came with a hot wire setup, and just like my kart filters you would get a fine dust on the inside of the throttle body, replaced with a cone filter and it ran clean...the only way I run a foam is with the additional foam dust sock (for off road applications), by the time you do that I think you've lost any benefit of additional flow of the K&N fliter...

Roygarth

So, er, basically they're really good!

Geoffrey

My experience has been that the difference on a dyno between a stock paper filter and a K&N filter is 1-2rwhp. This won't affect the air fuel ratio by a material amount.