What's your opinion on K&N Airfilters?

Yesterday I mounted a K&N Airfilter and then took the bike for a little ride. There was a positive difference in throttleresponse and it now idles +100 rpm (1100) and more even at that. It's not as jumpy/jerky in slow turns and the engine sounds more like an airplane engine.

In my previous bike, an 87, I didn't notice this effect when I switched to K&N, but perhaps I just wasn't paying attention as I should.

 

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Hi Cosmo !!
Yes, same as your bike - better throttle response, faster idle.
Better fuel consumption if you keep it clean, too - I got 18.5 K's to a litre when I had new plugs, oil and the K & N fitted. Would get better if I balanced the carbs, or rode it slower.....he he

 

I fitted one to my CBR1000FX 5 weeks ago. Can't say I noticed any difference, but how do you improve on perfection

 

Same here, I only bought one as they are cheaper than the stock Honda one's.. Saw no difference. Afterall its a airfilter, not a turbo charger. Some of the claims these companies make about performance gains are ridiculous..

 

Glad to find this post ? im looking at buying a k&n for the bike now, and ppli know are saying it wont make any differance, and a few are saying it will, its only the cost that holding me back at the moment ? i can get a stock filter alot cheaper than a k&n and if i'm not gona gain anything, i can think of other parts i could buy with the extra cash ?

 

Hi all

i ordered mine, same price as the stock filter from honda !

 

would the cleaner work better if you removed the restricter inside the air box

 

Be doubtful, Honda wouldn't put something on their bike to gimp its power, must serve some purpose other than stopping bugs and small children getting sucked into the engine..

 

I was told I would have to re-jet the carbs on my 87 if I bought K&N, anyone else heard this?