K&N Addresses MAF

[Racer-x]

Originally Posted by Adam

I've had my BMC in now for 2.5 yrs with no issues at all. It is about time to either clean it or replace it and to tell you the truth I'm just going to order a brand new one. I'd rather pay $75 for a new one than risk fouling a 300-400 dollar MAF. Hell, even the paper Porsche filters are what 30-40 bucks? I don't mind tossing the filter even though it's resusable.

+1 Adam, I agree... (I would have said just '+1', but the forum says that message is too short).

[edevlin]

Hi have had my BMC air filter that is part of the TTP cold air intake system on my 2.7L 2000 Boxster for about 3 months now. I have cleaned it twice since then, and it is due for another cleaning.

I have been very impressed with how much dirt, dust and such comes off the filter with each cleaning. Its pretty easy to clean, its more of a bother to get at the filter than it is to clean it, yet I would like another filter unit. Then I could just swap them out when needed.

Ed

2000 2.7L Boxster
ttp intake, chip, cat bypass
17" stock wheels

[Adam]

Originally Posted by edevlin

Hi have had my BMC air filter that is part of the TTP cold air intake system on my 2.7L 2000 Boxster for about 3 months now. I have cleaned it twice since then, and it is due for another cleaning.

I have been very impressed with how much dirt, dust and such comes off the filter with each cleaning. Its pretty easy to clean, its more of a bother to get at the filter than it is to clean it, yet I would like another filter unit. Then I could just swap them out when needed.

Ed

2000 2.7L Boxster
ttp intake, chip, cat bypass
17" stock wheels

You've had the intake system and BMC filter on the car for only 3 mo and you've already cleaned it twice?.....And it's due for another cleaning? Do you drive in extremely dusty and poor conditions all day? I might be wrong but I think you may be overdoing the cleaning thing IMO. My BMC filter came with instructions to clean and reoil every 15k miles. This is under normal use of course, but I don't picture many boxster owners driving down gravel roads all day long with would neccesitate the kind of cleaning regiman you are currently on. Just food for thought because the more you monkey with reoiling and cleaning the more likely you are going to foul the MAF.

[edevlin]

The first cleaning I did after the first month was because I did have to drive over several hundred yards of a gravel road daily while they did work on our road. The filter was very dirty.

The second time I cleaned it about a month later was following several long trips, I think I put 3,000+ miles on the car. No gravel road, but again, the filter was very dirty.

I am planning on having a new exhaust system put on next week. I will be getting new oxygen sensors on my 2000 Boxster and I wanted to check the BMC air filter again. I have never tried to clean a traditional air filter to see how much junk gets in it after 1000 miles or so.

But it is impressive how much material it trapped by the BMC filter element. Mostly what I see when I look at the filter is a dark, blackish deposit on the filter. When I hit it with the cleaner and let it sit, then rinse with water, a lot of dark brown material comes off the filter. It appears to be very fine particles.

Part of why I am doing the filter changes is that I just want to mess around with my car and want to see how much material is getting trapped in the filter. I am very careful about not mucking up my MAF with oil if I can help it. I try not to apply too much oil, I wipe off any excess oil, then use compressed air carefully to blow off any loose oil and wipe down the inside of the filter unit before I reinstall it. That process seems to work well so far.

Some folks have said that the BMC oiled filters are not doing that good of a job of getting small particles out of the air stream. It sure seems to be doing a pretty good job to me, have fun,

Ed