...upgraded your filter to a K&N? I was cleaning my filter off of my Injen and i come to realize its a pretty cheap filter in quality,etc. For you guys who have upgraded to a K&N , any diffrence in sound, performance, filtration?

 

hi there. i don't really post on this forum, but i do like to read the threads. about your question: i just recently bought a k&n air filter for my dad's 2003 maxima. there is a noticeable increase in power. the throttle also seems a little more responsive. hope this helps.

 

forget K&N, you have to worry about oiling the damn thing. Get an Apex'i filter....

 

only every 15K or so miles. I upgraded to a velocity stack K&N and sounds great

 

Rafe: did you use the K&N filtercharger cleaning kit?

 

Yeah i used it , sprayed a light coating, heard to many horror stories of org members over spraying to much oil and messing up there MAF sensor.

 

I did mine last night for the first time. These things really hold water, and I spent about 15 minutes shaking, tilting, etc. to make sure it wasn't waterlogged before oiling. Light sprays will do, just get it that reddish color it had when new. If clean prior to oiling, it should be light pink/red in color. When K&N says let it sit for 20 minutes, they mean it.

 

what's the size of opening in the injen cold air intake? I wanted to get a K&N to replace what it comes with, but I never got a chance to measure it...or should I get the Apexi (is that right?)

 

any filter with a 3" filter will work.