Here's some quotes from the K&N site. So it looks like you can mess up sensors (provided you have a newer car) if you're lame enough to totally over saturate your filter. As far as the 02, it doesn't address that specifically. I've personally used K&N's for 30 years on various vehicles 2 and 4 wheeled and never had any damage or problems resulting from their use. Hope this helps to quell any fears out there. If you need further convincing: http://www.knfilters.com/ Greg Overman
7. Will a K&N filter cause my vehicle's mass air sensor to fail? No. A properly oiled K&N filter will not contaminate a mass air sensor. However, if extremely over oiled, it's possible for contamination to occur. In the last few years certain vehicles have had design problems with the mass air sensors. Some dealers have attempted to blame the problem on a K&N filter, however, of all the sensors we have sent off to be tested, we have yet to find one that failed due to oil contamination. The defect in all cases was within the mass air sensor unit. 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 may hinder their operation. 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 in the back of this catalog. ----- Original Message ----- From: "Adam Frank" <[email protected]> To: <[email protected]> Sent: Tuesday, August 20, 2002 12:04 PM Subject: Re: [A2-16v] K&N filters and the 16v > ok then, the K&N's wont hurt your mass air meter, but what about the O2 > sensor? i have heared that the K&N's can wreck them.
