K&N: anyone heard of this?

I recently bought a K&N for my 07 600rr and when arranging a time to setup my 20k service, i asked the guy to put it on for me.   he told me that it was a bad idea, not to install it because it will hurt the life of the engine.  ive put K&Ns on all my vehicles thus far, and always had good results.  has anyone heard of anything bad resulting from a K&N?? 

quote:

ORIGINAL: i3enny

I recently bought a K&N for my 07 600rr and when arranging a time to setup my 20k service, i asked the guy to put it on for me.   he told me that it was a bad idea, not to install it because it will hurt the life of the engine.  ive put K&Ns on all my vehicles thus far, and always had good results.  has anyone heard of anything bad resulting from a K&N?? 

at the dealership right? He wants you to continue buying their shyty paper ones. I always loved K&N and used on many vehicle w/ no issues.

there arent any issues however the stock air filter is just as good if not better than the K&N from what very many people on a lot of different forums will say.  Now Oil is another thing...are we talking air or oil?

quote:

ORIGINAL: Jump1979man

there arent any issues however the stock air filter is just as good if not better than the K&N from what very many people on a lot of different forums will say.  Now Oil is another thing...are we talking air or oil?

a paper filter will never compare to a K&N. K&N''s oil filters are good too.

yeah i wouldn''t say it would hurt the engine, however a lot has been said about how the K&N filters are more restrictive with air flow. in cars K&N are okay because they are a closed system whereas in bikes they are not so tech used in a car doesn''t necessarily translate to a bike...just something to keep in mind...

damn board... most thought is that the engineers designed the engine with a very specific fuel to air ratio and the paper filter accomplishes that, using an aftermarket filter should almost always be accompanied by a tune, unless the filter allows roughly the same amount of air into the engine...

considering the last thing you want to do is restrict air, that is the reason most people shy away from KN....

generally if you are going with aftermarket, opinion is that BMC is the best

and +1 to jumpman on the oil filter thing, that can make a difference, i personally read reviews on different filters and have been using Purolator Pure One with great results...

quote:

ORIGINAL: ffingers

yeah i wouldn''''t say it would hurt the engine, however a lot has been said about how the K&N filters are more restrictive with air flow. in cars K&N are okay because they are a closed system whereas in bikes they are not so tech used in a car doesn''''t necessarily translate to a bike...just something to keep in mind...

Ok, hows this. The K&N in mine flows more air than a paper one could for it.

I dont see how a K&N would be more restrictive. A tune would deff be needed.

i am only going by research done by some other people, i can''''t say i have personal experience..yet 

but side by side, the K&n has less surface area to flow air...i''''ll get the link

here''s a side-by-side example with comments http://www.cbr929rr.com/airfilter.htm (i know it''s a 929) same thing with the f4i

stay OEM

quote:

ORIGINAL: gotobatter

stay OEM

Hell no lol

I have been running a K&N air filter for two years now in my bike with no problems. It was actually recommended by many for better air flow than the stock. It''''''''s also nice to be able to take out and clean and put back in...dont hav to buy another filter. It pays for itself with that respect.

Go with BMC or stick with the OEM.

I think it''s because aftermarket filters are not design specifically for the engine or sensors for the engine.  Running oiled type air filters can ruin sensors in the intake and cause problems.  And of course, the dealer would not take chances of running with aftermarket filters.

i am pretty sure they won''t ruin sensors in the intake....it''s more because these bikes are tuned for a precise air flow and the stock filter gives that....you go aftermarket that either restricts or increases air flow, you need to mess with the FI to compensate and most people don''t....you can look here on the board though, a ton of people run an aftermarket filter without a tune so it isn''t gonna destroy you, but you are likely not getting an increase and in some cases might be decreasing HP....

if what you are suggesting were true, racebikes would need different intake sensors...i doubt they intake sensors are all that different from stock, as they are just sensors, what changes is that the FI is specifically mapped to compensate for a drastic change in air flow..

K&N is the shiz

k&n is the the shiz . i want one so bad... but i wont get one until i can afford it and a pcIII. that way i can get a map for it and my pipe and therefore have all the right air to fuel ratio that is needed.
 
 
that, ladies and gents, is how you do it

I run K&N air filters in every vehicle I own and never had a problem. Also run a K&N oil filter on my F4i. 
 
I thought the knock on them is they flow MORE air, providing less filtration and the possiblitity of sucking debris in your engine.

quote:

ORIGINAL: rolandk

I run K&N air filters in every vehicle I own and never had a problem. Also run a K&N oil filter on my F4i. 

I thought the knock on them is they flow MORE air, providing less filtration and the possiblitity of sucking debris in your engine.

Now this is a possibility IF it isnt cleaned & recharged like it should be.

Personally, I have heard too many bad with the good for me to go with K&N. K&N have been shown to actually decrease hp in the 1000RR. Personally, I would go with BMC. In reallity, I am still with my stock filter.

quote:

ORIGINAL: Onarom

Personally, I have heard too many bad with the good for me to go with K&N. K&N have been shown to actually decrease hp in the 1000RR. Personally, I would go with BMC. In reallity, I am still with my stock filter.

I''m willing to bet the bad dyno results were from ppl who didnt like K&N to start with.

K&N''s have flowed better on everything I have ever installed them on. And that list ranges from VW powered sand rails (open system), street bajas(open system), street bugs, small block chevys, and a few diff bikes.

And I think if they decreased performance they would have stopped selling them LONG ago or corrected any issues with their filters. Hell I never heard of BMC until last year so...

You might be right or it could just be a fluke with the 1000RR. But I haven''t heard about BMC until last year either. I am just regurgitating what I have heard from other people.

oil type filters CAN ruin sensors in your intake.

i dont think its much of an issue on a bike though, more so on cars.

heres what heppens.

you have your oiled filter (K&N, AEM, W/E) you have your car running producing a vaccum on the intake pulling air from beyond the filter and getting clean air after it, ALSO mixed with small particles of filter oil, over time they can gum up on the mass air flow sensor(MAF) which reads resistance though a small heated wire in the intake to determine how much air you are flowing to calculate how much fuel the fuel system needs to be producing.

SO when you gum up your MAF then you start getting erronious readings from the sensor.
as long as you have the time to remove the sensor every once in awhile to clean it off then  you should be fine (id also take a look at the throttle body as well, i have seen buildup on both)

im not very familiar with these bikes but thats how it can cause problems on vehicles.

im not trying to bash K&N or anything, its jsut a problem with all oiled filters, just stating the facts and what i have seen from personal experience.

Tell ya what... you want a sever more opinions, pictures of the different filters (very enlightening!), and some real information about air filters for bikes... then go to another thread I started several months ago... find it here...

http://www.cbrforum.com/m_506871/tm.htm

Oh, and so you know, the BMC picture IS of the race filter.

well, listened to and read a lot of ideas...   heres my conclusion:  anyone wanna buy a new K&N??  I have one for sale...  brand new  in the box

I have never heard of that either.
Ask him "how does this hurt the engine"
see what he responds.