Air Filters!?

[Wafer_Thin_Ham]

Some people think that the OE filter is the best you can get, whilst others reckon it's best to use an aftermarket one as part of the tuning process. So I ask you the good people of BCF for your opinions and experiences in the world of air filters.

I was thinking of getting a K&N for my machine and wondered what other people's experiences were.

[Wooly R6]

i would only use another filter than OE if i had a power commander and had it set up with the exhaust etc
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R6 has been sold - 2004 Honda VFR VTEC now sold too - no bike at the moment

[feef]

I use whatever the shop/dealer has in stock when I need a new one. Not bothered what's on the box, but it doesn't have to be OE inasmuch as it doesn't have to be a Yamaha part.. it just has to be the right part

a
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[moonym20]

I have heard some horror stories about how much grit and crap K&N filters let your engine ingest a website had some pictures ages ago showing how much crap a K&N will let flow through

at least with the standard airboxes (usually meaty sponge) there is less chance of abbrasive nasties getting into your engine
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A scientist crossed a skunk with an owl. He's got a bird that smells but doesn't give a hoot

[DEN MONKEY]

Have got a bmc that I picked up new for a great price off ebay for my zx6 and to behonest even with the new yoshi havent noticed any real difference.
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meh

[brooky]

[Walloper]

If you only have one bike then why risk a failure or extra wear etc. by fitting fake/non OEM?
Mine is from OEM coz I can't be arsed looking for an alternative if there is one.
Not a cost/performance factor I would never realize a difference maybe.

Possible MPG change ???

Either way not bothered.
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[MarkyPancake]

OEM for me because once I change the filter I'll have to do the cans, get a PCIII and Dyno it.

[Wafer_Thin_Ham]

[befdelta7]

i havent used any sort of filter on my bike for arount 10months, opened up the airbox took out the filter and put it back together but used longer bolts and some copper piping to keep the filter box open 2inches arount the side so as i ride along air flows straight into the box, and doesnt have to be sucked through the very, very restricting snorkels

with the box closed up, the power loss is amazing, struggled to get to 75mph and took the rev's ages to reach 10,000 rpm. very very restricting airbox ...


but got round that one pretty quickly
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[Johnny GSX-R]

K & N for me, fitted TRE de-restrictor, filter, straight through cans and a DYNO.. wooooo hooooo

[Wafer_Thin_Ham]

and what was the finished figure??
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[MarkyPancake]

[kawakid]

I've not got the 2 quickest bikes on the planet, but K&N made ZERO difference.

Its also a con, reckoning you'll never need another air filter again and then the cleaning solution they sell you is more than a normal paper air filter.
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I've a twin and a 4.

[Pte1643]

[Johnny GSX-R]

[craigs23]

I've got a Pipecross filter in the 32.5

It doesn't perform significantly better than the stock unit, but does mean I can wash it as it's made of foam, rather than replace it.

[sagalout]

haha, serviced the bike today for the first time to be confronted by this:

https://farm1.static.flickr.com/171/484147521_5755ed1067.jpg

Needless to say its running a hell of a lot faster and smoother now

[MarkyPancake]