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      04-02-2012, 10:25 AM   #43
armyav8tor's Avatar

Drives: E92 M3
Join Date: Apr 2008
Location: Tampa, FL

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2008 BMW M3  [5.00]
Originally Posted by Sal@Evolve View Post
Ours is just inside the lower air intake.

It would have to be a serious bit of debris to put a hole into an K&N type filer. They do have a metal gauze which suspends the filter material.

Water ingress is also very unlikely unless you drown the filter.

Have you ever seen this on a real race car? I would be interested to know because we are not aware of anything like this and we have a large number of race cars running some of our software and hardware running open filters subject to the elements.
My concern is from my last track day at VIR where I got a ton of new paint chips on the car and a lot of them are in the vicinity of intake. I've never experienced this when I was on the Nurburgring or speeding down the autobahn. I guess the tracks around here are not as clean as the ones in Europe. I got a couple of chips that went straight though the paint and to the bare metal on the hood. I was not a happy camper but I got some trakktape for next time. I'm sure it would be a one in a million shot for the debris to hit the filter just right to puncture it, but with my luck, it would happen to me.