which filter do u knowledgable guys recommend?

trogan recommend piper as its been newly developed compared to k&n whos design is much older

reading a write up the piper x tripple layer foam design provides the same amount of flow constantly where as cotton gause filters tend to clog reducing flow from new?

will my 08 bike compensate for the filter along with my stealth?

K&N.

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Feros Ferio

Demon Tweeks used to have an airflow rig with a K+N, Foam and a paper filter fitted. The filters had been fitted to a car for 10k miles.
The more air they flowed, the higher a ping pong ball went up a tube.

I use K+N filters now

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If your dreams don't scare you, they are not big enough.

Well put it this way. Any air filter is designed to block the path of debris (in the air) from getting into the engine and in time the filter will become more and more blocked. At some point the air flow through the filter will become less than its design limits and will need to be cleaned or replaced. The only way the Piper filter would do what you have said is if it cleaned itself through its operating life. Which it and no other does in this simple form.

I have read the Piper/Trojan blurb, see what they are saying and would say they are talking about "time-lines". Piper filters are and always have been "Race" filters and they change them like all race parts for every race. The K&N is, mostly, a re-usable road filter design.

What they do not say is that the Piper is a "flat surface" design were as the OEM (which is good) and the K&N (much better) are a flutted design. These fluts make for a VERY large filter surface area and are very efficient or a least enough for normal road use. Either/or I dought you will see the diff on the road. I have used K&N air filters on my bikes and cars for years not just because they work better over OEM filters but because they are easy to sevice, save money (if you do a lot of miles like me) and can get close to 50% back S/H. Which is what I suggest you do. Buy a S/H K&N air filter because you do see them about for the XB and are about £25.

The ECM will adapt with either filter for your the Stealth can but you may still need to re-fuel the system. Either way dont look for BIG bhp gains (not going to happen) more a better sound, looks and better running.

PS - I hope no one is thinking of saying that a blocked filter is more efficient over a clean one because its bollocks. And yes I have had it before

K+N.

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Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
01 X1
03 P3
10 CR

He's right you know, as usual.

I bet you have got one of those for your 1125...

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08 Specialized Langster

Pipercross filters are washable and re-oilable just like K&N so are not a 'throw away' race item at all. They offer race only filters for some models and road/race filters for others. The Buell item is a road filter so have thicker and denser foam and also dual layers of varying density.




That isn't actually correct. The advantage of dense foam filters such as Pipercross is that they have a much larger surface area than either paper or cloth types and are certainly not flat surface. This means that they resist clogging for much longer than cloth or paper types. Filter performance measured on brand new filters is similar, but measure a filter with 5000 miles use and the resulst will be much more telling, with stock filters coming out very badly in comparison to K&N or Pipercross.

Pipercross have been making performance filters for years and supply some of the top names in racing and OE filters for people like Triumph, so are just as good as K&N (and are of course British ).

Lastly, when we first approached Pipercross to make a Buell fitment we supplied them with a stock and a K&N filter. Their brief was to make a filtrer that flowed better than either and that was suitable for prolonged road use. They have very sophisticated flow benches and measuring equipment and are happy that they have achieved both design briefs.

Both K&N and Pipercross work extremely well so you have a choice of two excellent products. If you have a particular brand loyalty then go for that one. You won't be disappointed with either of them.

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"Racing is life. Everything before and after is just waiting".

Tee hee!

Installed it a couple of days ago. Seems to make the bike breath easier and run more smoothly (or should I say less lumpily) at low RPMs. I've no idea if it produces more power now, and to be honest I don't really care - there's more power there than I'll ever need, and it's not like I'm racing.

K & N....

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Neil Parmar - "bmer"

Pipercross

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In a purple fug

thanks for the input trogan and peeps very varied

piper say this

Pipercross Air Filters

Welcome to the world of Pipercross Performance air filters – the champions choice.

The PX range of Pipercross high performance air filters offers the ultimate in engine filtration, giving outstanding performance over the life of the filter compared with the leading cotton gauze filters.
This is made possible because of the unique filter material used. It is constructed from a multi-laminated layer of reticulated polyurethane foam lattice, impregnated with a dirt-retention additive.
This filter framework allows optimum airflow to the induction system, as well as absorbing dust particles in a sieving action. The layers of foam contain pores of differing sizes, with larger dust particles trapped in the outer layers, medium particles at the next layer and so on, through to a final layer that traps particles as small as five microns. Pleated cotton gauze filters, by comparison, have to be regularly cleaned to achieve the same life as a maintenance-free foam filter. This Means that although air flow and power results are often very similar when first fitted the Pipercross continues to flow more air than the cotton gauze filters once they start to get dirty.
Result, high power, often out performing competitive brands in tests and low maintenance.
Pipercross are one of the most successful filter manufactures and have won hundreds of championships including several World Rally Championships. Additionally they have been supplying OE filters to Triumph for about 10 years and are used and recommended by top Ducati race constructers JHP and Crescent Suzuki where they have been attaining excellent power

Pipercross

and Stealth................goes like stink!

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aka DrBagiva, DrBusqvarna, Uncle Knobhead

Like the man said either or but the Piper is a touch cheaper. Whatever you have just make sure it is serviced right. I still dought that you would notice much of a diff on the road.

As far as the numbers go it can only be done with the same bike, over the same run with a rider, like a racer, that can pick out the diff between the filters and that can be subjective. It is why some like one thing and others like the other. Or, of course, they use them because of sponsership IE The free parts. If any product has a noted advantage then they all would use it. Its "Horses-for-courses" IMO. Get what you fancy and/or ask Matt why he sells both types as it seems odd to me.

K&N filters used in cars, bikes, etc for many years and have had many championship wins

what ever gives me the best gaines for the cheapest price - simples