New K&N Filter!!

it will save you money over time and is easy to clean. engine is a happy camper now, personally i wouldn't care about the minuscule hp gain.
 
at the risk....

of raining on the parade, just be aware that the K&N lets in more dirt (despite their ads). a UOA (Used Oil Analysis) will typically show a Silicon and Aluminum spike when using a K&N. for 1hp on the butt-o-meter, this doesn't sound like a good deal, but to each their own.
 
of raining on the parade, just be aware that the K&N lets in more dirt (despite their ads). a UOA (Used Oil Analysis) will typically show a Silicon and Aluminum spike when using a K&N. for 1hp on the butt-o-meter, this doesn't sound like a good deal, but to each their own.
+1, I've read of this also.
+ be careful when you clean and re-oil them, if you have too much oil you can screw up your MAF sensors, I've heard of many guys having this problem.

I had them on my other Infiniti and gave the filter and K&N cleaning kit away. I will stay with the OEM or a performance dry filter. When my air filters require changing I am going with Amsoil Filters.
 
+1, I've read of this also.
+ be careful when you clean and re-oil them, if you have too much oil you can screw up your MAF sensors, I've heard of many guys having this problem.

I had them on my other Infiniti and gave the filter and K&N cleaning kit away. I will stay with the OEM or a performance dry filter. When my air filters require changing I am going with Amsoil Filters.

Really? Interesting. I did not hear this.

Glad I kept my original filters just in case.
 
Really? Interesting. I did not hear this.

Glad I kept my original filters just in case.
You can do a search and honestly there are believers both ways.
I think one important thing is not to over oil it when you do clean it. Also it was never a cost savings for me since I do not put a lot of miles on my vfehicle and I never drive dusty roads.
When I had one it did sound a nicer but I could not notice a performance improvement.
 
yes...

You can do a search and honestly there are believers both ways.
I think one important thing is not to over oil it when you do clean it. Also it was never a cost savings for me since I do not put a lot of miles on my vfehicle and I never drive dusty roads.
When I had one it did sound a nicer but I could not notice a performance improvement.

you can find people who believe ANYTHING on the net (well, except perhaps Luddites, having a website would sorta defeat the purpose..), but if you go to BITOG you will see little question of the merits (or lack thereof) of K&N. fiber based filters work by causing debris to strike the fibers and stick to an adhesive (in the case of K&N, oil). if you can see light (not just translucence, but light)through the filter that is a path that dirty air can get through. fiber based filters work by depth, the thicker the filter the more turns the air has to make and the more chance that any debris will impact a fiber and stick. the K&N isn't very thick, is it? they are basically good for stopping golf balls and chicken feathers, anything smaller is heading for the intake.

paper filters work by the air flowing through the pores in the paper. since the pore size is controlled by the paper mfg process, this gives you very good control of the particle sizes allowed past the filter. a good filter (Nissan and Wix both make good ones) will have as many pleats as you can pack into the space to slow the airflow through the filter media (and thus the pressure drop).

i have an 06 45, and i think it could stand to breath a bit better. however, i also have 100k miles on it, it doesn't use a drop of oil, and i plan on getting 200k out of it. i would like to experiment with 2 filter boxes and a Y connection, but will probably just go for an exhaust this year (low hanging fruit).
 
you can find people who believe ANYTHING on the net (well, except perhaps Luddites, having a website would sorta defeat the purpose..), but if you go to BITOG you will see little question of the merits (or lack thereof) of K&N. fiber based filters work by causing debris to strike the fibers and stick to an adhesive (in the case of K&N, oil). if you can see light (not just translucence, but light)through the filter that is a path that dirty air can get through. fiber based filters work by depth, the thicker the filter the more turns the air has to make and the more chance that any debris will impact a fiber and stick. the K&N isn't very thick, is it? they are basically good for stopping golf balls and chicken feathers, anything smaller is heading for the intake.

paper filters work by the air flowing through the pores in the paper. since the pore size is controlled by the paper mfg process, this gives you very good control of the particle sizes allowed past the filter. a good filter (Nissan and Wix both make good ones) will have as many pleats as you can pack into the space to slow the airflow through the filter media (and thus the pressure drop).

i have an 06 45, and i think it could stand to breath a bit better. however, i also have 100k miles on it, it doesn't use a drop of oil, and i plan on getting 200k out of it. i would like to experiment with 2 filter boxes and a Y connection, but will probably just go for an exhaust this year (low hanging fruit).

Hmm...I've had a K&N filter (intake) on my mustang that's got 80k miles on it and never had any issues. Knock on wood.
 
I just put my K&N in...i question its ability filter tiny debris...

other than that, no noticeable performance difference or difference in mpg. the only difference i noticed was there was a slight sound of the intake taking a little more air at 4-5k rpm...
 
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