Originally Posted by PropellerHead

Today was arrival and change to a K&N drop-in filter. If you've been following, I removed the AFE this past weekend- mostly out of sheer boredom from lack of something to do. I'd used it for about 3.5 years.

The OE filter that was in the stock intake was the same one in the car when I picked it up with 11k miles on it. It was clean and stored indoors for the past few years. I wrote about this weekend's change in this thread.

I looked around online and found folks with E60 545's and E65 7's that had varying reports of both the AFE and the K&N drop in. My interest piqued, I ordered up the right one from our old friends at JC Whitney.

I noticed right away that the 4.8is was WAY more responsive on throttle with the K&N than the OE. I dare say it reminded me of the change to AFE way back when. It is slightly louder than the OE intake, not as loud as the AFE. So, I'll run this for awhile and see where it gets us. Part of the sales pitch from K&N is that it's a 'lifetime filter.' I am not so sure about that. I can see myself making this an annual/18 month swap. At $43, it's not so bad, and it can't be bad to have a new filter.

But I'm ahead of myself. So far, I like the K&N better than OE and I am warming up to it as my intake of choice.