k and n air filters
 

coming up for my 11,000 mile service in which the air filter gets replaced, i want my dealer to change it for a KN airfilter but there not so keen saying suzuki dont reccomend them and they dont run right with them on, this correct?

(yes, yes i have done nearly 11,000 miles on it since jan 28th lol)

Re: k and n air filters
 

Mine runs better on a K&N than a Suzuki one

do you have a power commmander aswell ?

Mine's fine with one and I don't have anything special on mine.
They don't want you to put one on because then you won't have to keep buying £15 air filters from them.
By all accounts, a K&N does bugger all performance wise, but it is a reusable air filter that seems to work at least as well as the standard.

I have one on my bike and it didn't have any negative effects that I have been able to notice at least.

Mine appears smoother with it fitted... :shock:

K & N filters and dirt
 

Search the internet. There are many reports, including some lab tests, that imply that the reason K & Ns (and some other "performance" filters) pass more air AND more dirt. The other issue is rapid loss of flow capacity with relatively small amounts of dirt trapped.

Combining those two issues keeps me with stock paper filters. There are too many reliable tests (not the amateurs, real lab testing) that confirms the more dirt/less capacity statement.

I will be fitting a K&N to mine as soon as I have the funds.

I dont believe the K&N performance drops off at all. I have one on my Mini and with about 60000miles on it I did a rolling road session. The filter was mega dirty but still produced the same power as the new filter the guy at the RR wanted to sell me.

exactly why some question whether they filter as well as oiled-foam or paper...Personally I think the best are oiled foam and them paper and then k&n style with oiled synthetic strands. One site suggested that evidence that they don't filter as well can be found on their dirtbike filters which are lined with oiled foam while most other companies stick with the same types of filters for dirt or street...

Just my take on the whole thing...my car uses a k&n, but I removed my bikes k&n because of surging and poor throttle control...I've got an OE-equivalent for only $19 dollars US.

Belief??
 

Belief and test facts are not on the same level of reliability. Original equipment paper filters almost always outperform aftermarket "performance" filters. The two most obvious points are that high flow filters inevitably passed more dirt, and that oiled filters lose flow capacity with relatively small amounts of dirt trapped.

API and ISO tests correlate very well with real-world testing. It is, of course, your money and your bike.