Vented Hood Question

jdot · 06-19-2010, 02:37 PM

Hey guys...sort of a noob question here...but I was sitting around reading the engine tuning section and a lot of people are concerned about hot air being sucked into the engine after getting an aftermarket intake. I read a few people who recommended a vented hood. My question is...what happens when it rains?

ss134 · 06-19-2010, 03:00 PM

You don't need a vented hood on a 328i, or even a 335i for that matter (even with performance mods). People do it for looks and nothing else despite what they may say.

jdot · 06-19-2010, 03:52 PM

i mean...it makes sense....with the vented hood...more hot air is able to escape...and my car's fan seems to kick on a lot...like my car becomes LOUD...in a bad way...like the fan is overworking it self...should i take it to dealer? or is this normal?

SV Concepts III · 06-19-2010, 05:39 PM

A vented hood will allow heat to escape which can help in track settings or on hot days to minimize heat soak. The Vorsteiner vented hood for the 135 was track tested to reduce ambient engine bay temps by 20 degrees Fahrenheit so there is functional benefit to the vents. However, on a street car, the main feature is for aesthetics.

jdot · 06-19-2010, 06:03 PM

hrm...cuz it gets up to over 115+ last summer in Davis, CA. I was thinking about getting either the injen intake or afe...cant really decide at the moment...but from the replies i got so far...it seems like a vented hood doesn't make a difference...i guess money saved = money used on other mods =)

SV Concepts III · 06-19-2010, 10:00 PM

Quote:

Originally Posted by jdot

hrm...cuz it gets up to over 115+ last summer in Davis, CA. I was thinking about getting either the injen intake or afe...cant really decide at the moment...but from the replies i got so far...it seems like a vented hood doesn't make a difference...i guess money saved = money used on other mods =)

It helps with venting the engine in hot conditions so it's worth it if you have an open ended intake.

If you are worried about heatsoak, I suggest the aFe intake because it actually has a heatshield without exposed filters.

Alex@Alpine · 06-19-2010, 11:29 PM

On my 335 with the Vorsteiner Vented hood, I can feel the heat coming out of the vents, once on a cold night I saw the fog coming out, so I am sure it works, to what degree? I have no idea...

jdot · 06-20-2010, 01:34 AM

lol! fog coming out?! i bet that looked sick!...or the car next to you might think you're overheating....LOL...my 95 accord used to do that...when it overheated...smoke came out EVERYWHERE

06-19-2010, 02:37 PM	#1
jdot Private First Class 22 Rep 100 Posts Drives: 07 328i E90 Join Date: May 2008 Location: Sacramento, CA iTrader: (0)	Vented Hood Question Hey guys...sort of a noob question here...but I was sitting around reading the engine tuning section and a lot of people are concerned about hot air being sucked into the engine after getting an aftermarket intake. I read a few people who recommended a vented hood. My question is...what happens when it rains? __________________ 07 E90 328i \| MB \| ZSP \| ZCW \| ZPP \| De-badged \| Black Matte Grill \| BMW Performance Exhaust \| 18" Miro 942 \| Interior LED kit \| Akebono Brake Pads \| BMS PBX \|
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06-19-2010, 03:00 PM	#2
ss134 Brigadier General 241 Rep 3,899 Posts Drives: F80 M3 Join Date: Feb 2009 Location: Germany/UK iTrader: (1)	You don't need a vented hood on a 328i, or even a 335i for that matter (even with performance mods). People do it for looks and nothing else despite what they may say. __________________ 2014 AW F80 M3 DCT 2011 AW E90 M3 DCT - Sold 2010 JZB E90 M3 DCT - Sold 2009 6MT E90 LCI 335i M -Sport - Sold Last edited by ss134; 06-19-2010 at 04:08 PM..
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06-19-2010, 03:52 PM	#3
jdot Private First Class 22 Rep 100 Posts Drives: 07 328i E90 Join Date: May 2008 Location: Sacramento, CA iTrader: (0)	i mean...it makes sense....with the vented hood...more hot air is able to escape...and my car's fan seems to kick on a lot...like my car becomes LOUD...in a bad way...like the fan is overworking it self...should i take it to dealer? or is this normal? __________________ 07 E90 328i \| MB \| ZSP \| ZCW \| ZPP \| De-badged \| Black Matte Grill \| BMW Performance Exhaust \| 18" Miro 942 \| Interior LED kit \| Akebono Brake Pads \| BMS PBX \|
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06-19-2010, 05:39 PM	#4
SV Concepts III Lieutenant General 382 Rep 16,968 Posts Drives: BMW Duh Join Date: Apr 2005 Location: Santa Clara iTrader: (13)	A vented hood will allow heat to escape which can help in track settings or on hot days to minimize heat soak. The Vorsteiner vented hood for the 135 was track tested to reduce ambient engine bay temps by 20 degrees Fahrenheit so there is functional benefit to the vents. However, on a street car, the main feature is for aesthetics.
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06-19-2010, 06:03 PM	#5
jdot Private First Class 22 Rep 100 Posts Drives: 07 328i E90 Join Date: May 2008 Location: Sacramento, CA iTrader: (0)	hrm...cuz it gets up to over 115+ last summer in Davis, CA. I was thinking about getting either the injen intake or afe...cant really decide at the moment...but from the replies i got so far...it seems like a vented hood doesn't make a difference...i guess money saved = money used on other mods =) __________________ 07 E90 328i \| MB \| ZSP \| ZCW \| ZPP \| De-badged \| Black Matte Grill \| BMW Performance Exhaust \| 18" Miro 942 \| Interior LED kit \| Akebono Brake Pads \| BMS PBX \|
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06-19-2010, 11:29 PM	#7
Alex@Alpine Colonel 1351 Rep 2,448 Posts Drives: E90 M3 Join Date: Feb 2010 Location: United States iTrader: (50)	On my 335 with the Vorsteiner Vented hood, I can feel the heat coming out of the vents, once on a cold night I saw the fog coming out, so I am sure it works, to what degree? I have no idea...
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06-20-2010, 01:34 AM	#8
jdot Private First Class 22 Rep 100 Posts Drives: 07 328i E90 Join Date: May 2008 Location: Sacramento, CA iTrader: (0)	lol! fog coming out?! i bet that looked sick!...or the car next to you might think you're overheating....LOL...my 95 accord used to do that...when it overheated...smoke came out EVERYWHERE __________________ 07 E90 328i \| MB \| ZSP \| ZCW \| ZPP \| De-badged \| Black Matte Grill \| BMW Performance Exhaust \| 18" Miro 942 \| Interior LED kit \| Akebono Brake Pads \| BMS PBX \|
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