Quote:
Originally Posted by Jeff1962
I have heard this, but I don't know. I have one in my car and it has only helped. I looked at it last week with 10 months and 6500 miles and it looks like new. I bought the re-charge kit and didn't need it. As long as oil isn't dripping of it and you don't go offroad or drive through road construction alot you will be fine. I heard the K&N adds almost 5whp to the 135i.
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Jeff, any gains..if any are out-weighed by the crap the filter lets in.
Take a look:
http://www.duramax-diesel.com/spicer/index.htm