[beavis69]

I've used K&N air filters for many years in various cars and motorcycles.  Never heard of DNA until now.  The K&N appears to be cheaper.  Any thoughts on which is better (or cause less problems) or if they're comparable?

Adam

[Jack Straw]

Don't waste your money on either, the stock filter is just fine.

[beagle]

If you remove the stock cover, put it in the oven at 200 for five minutes the baffle will pull off as its glued on. This will offer the same intake performance on a stock bike as any of the filter kits. You have to replace the stock filter eventually, the others not.  If you trick the motor with a bigger bore etc, the intake kits may be of some use.

[fireypete]

Gotta admit, the guys are right.  i fitted a DNA without the plastic cover and noticed nothing. 

[JessHerbst]

Don't waste your money on either, the stock filter is just fine.

+1

[wfdTamar]

I reckon any of the re-oilable filters are much the same.

[lucky phil]

I reckon any of the re-oilable filters are much the same.

Me too, rubbish.

Ciao

[Haggisman2]

Just don't let the oil dry out

[Mort]

I've got the K&N and I'm gonna disagree with others in saying that it did make a difference, but I had a specific problem. After I installed the TEC 2-1 pipes the throttle started lagging in the midrange, but sticking in the K&N fixed that issue. If your pipes are stock then the filter isn't going to do anything by itself.

An engine is basically an air pump and if you increase the flow on one side (intake) then you need to increase it on the other (exhaust) for there to be any difference. Even then you're not going to EVER see noticeable performance increases from these mods. As I said, I just fixed a problem I created with my K&N filter. I don't think I gave it more oomph or anything.

[SandSquid]

I've got the K&N. I can't really feel a big difference with that alone, but I feel like it's done at least a tiny something. Aside from just installing a DNA or K&N, if you remove the cover and replace the stock exhaust tips, you definitely feel a difference, however minor it may be. People here will tell me it's psychosomatic, but whatever.

If anything, I just kind of like having the K&N instead of the throwaways. It'll pay for itself eventually. And, if it doesn't, who cares? Besides, you get a cool sticker with it that you can do with as you see fit; no one can tell you where to stick your sticker! 

[beavis69]

Thanks everyone for your replies.  It sounds like there's not much benefit.  I may replace the exhaust slip ons some day, not for sound or significant performance, but rather for the large bulk/size of the stock cans.  If that becomes the case, it sounds like there may be a small benefit or at least tuning improvement.  I'll weigh the filter cost at the first filter change, as I have K&N soap and oil already wasting space on a shelf without a filter currently.  I decided not to get a high flow filter for my Volvo 240.  That's a joke.

That being said, a little more exhaust sound would be nice, but not a ton.  I had Yoshimura slip-ons on my Suzuki SV1000S and they were just too damned loud.  Plus there's Harley riders everywhere here.  "Loud pipes save lives" goes the motto here.  Yeah not so much.  More like "Loud pipes may people hate motorcyclists".  I've never seen that sticker though.  Ok, off soap box. 

[whippers]

Also if you remove the airbox snorkel and put in an aftermarket filter (probably it is just the snorkel causing this) you end up with what I found a very unattractive intake honk. I would have gone back to stock if I didn’t then change the exhaust.

[Noelvh]

I use the paper I just fitted a home made retainer ring that is like the DNA ring. Sounds much better and the paper are cheap.

[JessHerbst]

You guys ever wonder why the factory engineers decided not to use same type design as DNA? I guarantee you they could manufacture it at the sane or lower cost as the one they used.
 I mean, why would they leave free power on the table?

[whippers]

You guys ever wonder why the factory engineers decided not to use same type design as DNA? I guarantee you they could manufacture it at the sane or lower cost as the one they used.
 I mean, why would they leave free power on the table?

There is no more power it is just cheaper to use their solution plus they get to sell you replacement filters.