My garage guy said I should dump the K&N filter as it could mess up
my MAF sensor, which he said is costly. I thought you put them on the car
and FORGET ABOUT IT. Its been on there forever and once in a while
I pull it out, vacum and shake out the dirt and dust and install.

Are these filters OK for our cars and do you have to wash them with the
K&N products.

Thanks
GBoy

 

Ur garage guy.....needs to find a different job.


If u take off the filter and air box completely, and just have MAF and the tube hooked up, ur car will start and run perfectly fine. the point of a MAF is make sure ur car runs well in different elevations and temperature environments.


How a MAF sensor works, if u look inside the MAF tube u will see a little thin wire making a loop or box looking thing, that wire heats up , and when the engine is under load the air rushing in from the outside "cools" off the wire, which in result, the computer detects and the temperature change and adjusts (or tunes) itself to proper operation...thats it, theres nothing to it

 

I think his mechanic is referring to the oil on the K&N filter getting on the MAF and gumming it up. Yes this can happen if you over oil your K&N filter and put it on your car. Be careful with your MAF, because it is expensive to replace.

You must maintain the filter properly. You have to clean it periodically and re oil it. I would go to the K&N website to see what intervals they suggest for cleaning and re oiling it. There is someone on here who used club soda and oxy clean to clean their K&N with good results. Find that thread for the info.

I have just gone to the Amsoil Nano filter since it is a dry filter and you just have to blow it out with compressed air or vacuum it and it is supposed to have similar gains to the K&N.

You could also get a stock type filter because you probably gain less than 2hp (if any) with a K&N or Amsoil filter.


Found the cleaning link: https://g35driver.com/forums/engine-...ew-method.html

Just so you know this is the wrong place for this thread, it will probably be moved to the intake/exhaust section.

 

My thoughts as well.

I believe the key is to lightly oil the filter. Too much oil could work its way out of the filter, and spread other places such as the MAF. Just make sure you don't go too heavy on the oil and you're good for a million miles. =)

 

^Word!!!!

 

Thanks guys, would mileage come into play if it was a stock air filter or a
K&N or the same milelage with both...

GBoy

 

i don't think his mechanic needs another job.
he actually right. The oil could mess up the MAF sensor. And a clogged MAF sensor can and will shut the car down due to low idle, etc.

When we installed the Amsoil filter (same thing as K&N) that's what the car did. Thank god Infiniti replaced the MAF sensor under warranty.

After that business, no more crappy aftermarket filters..

 

If you use a stock filter I would refer to my owners manual on when to change it. For K&N, they are supposed to last 1 million miles. I would check K&N for their service interval.

Edit, see #4 for K&N service interval: http://www.knfilters.com/faq.htm#4

In reference to tha above post, Amsoil makes more than one filter. They do have a filter that uses oil as well as a stock paper type replacement and the Nano filter which is supposed to be a dry type performance filter.

 

OEM Paper filters are recommended to be replaced every 15K, I believe.

K&N are recommended to be cleaned every 50K, but many just take them out and clean them on the first of the month.

OEM filters are about $25/ea.
K&N are about $50/ea + &10 for an aerosol cleaning kit.

 

Forget the little bit of horsepower difference between the 2 but would
there be better gas milage with one or the other.

I just cleaned mine out with pulling out what I could see in there plus
lightly tapping it, I was amazed how much sand like dirt was in there.

Maybe my best bet is just to buy a new K&N filter as it has been good to me
plus I won't have to buy there cleaning kit

GBoy

 

AEM Dryflow filters FTW!

Great filter, no oil and shown to have better filtration than the K&N. I don't know if they make an oem drop-in but they should.

 

I looked up the AEM dry flow on their web site not too long ago. The only thing that came up was the CAI. Apparently no drop in yet. =(

 

oem filters are less than $15.. lol..

 

AEM restriction levels are virtually the same in terms of a loading curve to the OEM filter. Better options are available.

 

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