you will never know till it happens to you.

 

what he said....

Jim

from K&N site....

Over-oiling

When servicing a K&N filter, take care not to over-oil the element. Besides impeding air flow, excess oil can migrate into the intake system where it can coat electronic sensors, which some OEM’s claim may hinder the sensors’ operation and result in a repair that will not be covered under warranty. Although K&N disagrees with such claims, as explained in more detail on this web site, in order to avoid a dispute with an OEM over the denial of a warranty claim, we suggest that you be careful not to over-oil your K&N air filter. Never saturate the filter. If oil drips from the filter, wash it and start over. Use only K&N oil. For example, an E-1500 filter has 92.4-inches of surface area requiring 1.707 fluid ounces of oil. Follow oiling instructions included with your filter or refer to the instructions listed here.

 

http://www.knfilters.com/facts.htm

read this.

 

JIMMYP,
Thanks for the clarification.

 

I'm not going to defend K&Ns filtering abilities, but an oiled filter should do just as good of a job. I think it would depend more on what size micron the 2 filters are rated at filtering out dirt. The paper ones just can't be cleaned out completely and you will always wonder if you have good airflow. I would think you would be buying filters all the time. I use K&N in all my vehicles mainly because I can clean them constantly, even after every dusty ride. I was never looking for an increase in horspower.

 

does the 800 have a map sensor? I remeber reading it didn;t in another post.

 

We have ben running a K&N filter on our 800 for 2 months now and have had no problem with the sensors or seen any sign of the machine being lean. The quad we have came way rich from the factory we have even run it without the air box lid and still no lean issues. I do believe there are alot of people out there with 700 efi's that have K&N's on them as well adn I have never heard of a problem with them.

 

Guys, The only sensor that could get "OIL" on it is the air temp sensor. Polaris does not use a "Mass Air Meter". The Polaris system is alot like the Speed Desity system Ford and GM have used in the past, except the auto manufactors use the O2 sensor in the exhaust for the rich and lean fuel control.

If using a K&N filter on a EFI bike causes engine damage because of the larger particles it would also be damaging to a carb motor that has air bleeds for fuel emmusion and so on....

I talked to another dealer today and they know nothing about the warning from Polaris.

 

Bullet,
What happens is that if oil gets on the air temp sensor then it's possible for that sensor to give a reading to the computer that the intake air temp is much lower than it really is.

This false low temp reading can happen because the oil on the sensor can conduct heat similar to water, thus giving a false low intake air reading.

This is similar to the human body sweating to cool itself down. When the sweat conducts your body heat to the ambient air around you, then you become cooler.

So you can imagine a wet sensor, that remains wet with oil, and then a ton of intake air blows over the sensor to dissipate the heat off the sensor thereby cooling it off.

Then the computer adjusts the amount of fuel based on this and then the air fuel ratio is too rich. If the air/fuel ratio is over rich then the engine won't be running correctly.


If you don't over oil the filter then I see no problem.

 

I need some more details because I thought you said the computer doesn't make any fuel adjustments.

I have the power commander on my bike and everything is related to throttle open percentage. A given amount of fuel to a given amount of throttle position, given by the TPS sensor.