Green Filter

Has anyone used the "Green Filter" in place of the stock BMW air filter? The claim is that they are are superior to the K&N and show a demo of increase air flow with theirs compared to the K&N. What say the congregation? Stick with stock? Go with a CAI? Does it really make a difference? Thanks in advance for the opinions.
Mike

I am not familiar with any green filters...can you provide more info or a link?

Do they need to be washed and oiled like a K&N?

greenfilter.com or greenfilterusa.com are the websites. These filters are just like K&N except instead of pink oil, they use...you guessed it...green.

Originally Posted by drharley

Has anyone used the "Green Filter" in place of the stock BMW air filter? The claim is that they are are superior to the K&N and show a demo of increase air flow with theirs compared to the K&N. What say the congregation? Stick with stock? Go with a CAI? Does it really make a difference? Thanks in advance for the opinions.
Mike

more importantly you should check out if they filter well enough.

They are decent filters; have one in my 2004 F150 and one in a 2003 330xi with no problems. The question is for performance is slapping in a million mile filter worth anything or is a CAI kit worth anything OR hsould I just go the Dinan route and really get the power on!

Originally Posted by drharley

Has anyone used the "Green Filter" in place of the stock BMW air filter? The claim is that they are are superior to the K&N and show a demo of increase air flow with theirs compared to the K&N. What say the congregation? Stick with stock? Go with a CAI? Does it really make a difference? Thanks in advance for the opinions.
Mike

I say stick with the stock intake but use a Streamline Engineering panel filter. It offers best protection with 99% filtering efficiency and capable of getting particles down to 1 micron and has pleats almost twice as deep as Green and K&N.

The Green does use a nice woven cotton media versus cotton gauze of aforementioned others. But the SE uses twice as many cotton guaze layers as the others and a really beefy urethane frame.

Panel filters are a nice tweak if you stay with stock intake which in itself is a good design I think.

You aren't going to "get the power on" with anything short of FI.

Be careful of the oiled filters. There is talk on the m5board.com of the oil damaging the MAFs and causing the motor to go lean and go BOOM.

Originally Posted by Bruce

Be careful of the oiled filters. There is talk on the m5board.com of the oil damaging the MAFs and causing the motor to go lean and go BOOM.

Over oiling is main cause of MAF's getting "coated". Thats why you have to be careful on the filter you buy. If the packaging is wet, thats bad.

Also, just make it a annual part of your maintenance to clean the MAF with a few sprays of contact cleaner. If you use enough diligence, there is no reason not to enjoy the benefits of an aftermarket high flow filter.

There are problably millions of oiled filters running around our streets and highways.