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Old 06-09-2009, 03:08 PM   #1
Spdu4ia
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Vented hood + open air filter?

So... for those with a vented hood. Do you have an aftermarket open air filter? and if so how does that hold up? Where are the vents located in relation to the air filter. I'm worried that if it rains it will rain directly on my filter.


If I get a vented hood do i need to put my stock airbox back on?
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Old 06-09-2009, 03:25 PM   #2
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i have the vented hood an i can see my filter right through it i heard it might not be good for it but i have'nt had any problems yet. An its been raining lke crazy for the past 4 days an still no problems an i drive it in the rain all the time since i got the hood.
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Old 06-09-2009, 03:34 PM   #3
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Not a problem unless you drive your car under Niagra Falls. There are dozens of threads on this subject.
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Old 06-09-2009, 03:46 PM   #4
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Never had a problem with open air filters and a vented hood on either Jon's E46 328 or E92 335.
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Old 06-09-2009, 03:50 PM   #5
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wow i cant see how this wont be a problem with open/exposed air filters.
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Old 06-09-2009, 04:03 PM   #6
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^ same as I was thinking... but the proof is in the people that do it... anyone else have experience with this?
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Old 06-09-2009, 04:05 PM   #7
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It just doesnt make sense. once you get water into your intake tubing its going to set off the MAF sensor then if you get it into your engine BOOMMM
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Old 06-09-2009, 04:06 PM   #8
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um...... travis

why are you discussing vented hoods?
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Old 06-09-2009, 04:20 PM   #9
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lol. He wants to hang is hood on his wall.
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Old 06-09-2009, 04:22 PM   #10
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True...if you submerge the intake like what happens when you have one that runs into your bumper. Check out 2000_328Ci (Chase)'s video:

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Old 06-09-2009, 04:23 PM   #11
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Ya seen that a while ago, but what if its raining real hard and your on the freeway.
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Old 06-09-2009, 04:27 PM   #12
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That's exactly what the video shows, torrential downpour on the freeway. Water will get into the engine, not nearly enough to cause issues with the factory or an open air intake. Your engine is designed to withstand moisture exposure so this will not be a problem.
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Old 06-09-2009, 04:32 PM   #13
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hummm.
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Old 06-09-2009, 05:05 PM   #14
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um...... travis

why are you discussing vented hoods?
what haha

thanks for the info guys
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Old 06-09-2009, 07:37 PM   #15
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I wonder if you could fit and suspend a piece of fiberglass or carbonfiber, slightly larger than the vents, about an inch or so below each vent?

This would allow air in and stop direct rain from coming in.

Just a thought
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Old 06-10-2009, 06:37 PM   #16
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ok ... so if I get one and it is parked outside and it rains the water that comes in the vent and drains onto my filter wont be a problem even if it saturates it? just kinda worried about that
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Old 06-10-2009, 08:12 PM   #17
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Raining while driving shouldn't be the big issue, the water will more likely flow across the hood than it would go down. What about if its been raining, that car has been sitting, so the water drains down and into the engine bay or I could say soaks the after market intake?
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Old 06-10-2009, 08:26 PM   #18
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Just another reason to not get a vented hood for me.
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Old 06-10-2009, 10:17 PM   #19
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Originally Posted by n2Bimmer View Post
It just doesnt make sense. once you get water into your intake tubing its going to set off the MAF sensor then if you get it into your engine BOOMMM
Your engine is designed to withstand quite a bit of moisture. You can't hydrolock your engine by excess water draining into your engine bay. You CAN however, short any unprotected wires such as angel eyes.

I believe at one point there was somebody who sold an insert for the vents. Does anybody have more info on that?
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Old 06-11-2009, 12:04 PM   #20
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Quote:
Originally Posted by benjamin1 View Post
Your engine is designed to withstand quite a bit of moisture. You can't hydrolock your engine by excess water draining into your engine bay. You CAN however, short any unprotected wires such as angel eyes.

I believe at one point there was somebody who sold an insert for the vents. Does anybody have more info on that?
Correct, if you have aftermarket wiring on the car, I recommend shielding it from exposure- this goes for a vented or non-vented hood as even the factory hood allows water to get in.

I believe you are referring to the Vorsteiner Rain Covers which are no longer offered.
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