Pros Cons of Ram Air Scoops?

e90x2011 · 01-21-2011, 02:13 AM

Pros and Cons? Purpose? Other than a good look through the grills

**335i** · 01-21-2011, 02:57 AM

never thought that i need to buy scoops for look, they dont harm but they good at high speeds

SV Concepts III · 01-21-2011, 12:11 PM

If you have an open air intake then they are worth it, they will channel more air directly into the open air system. The factory intake can't benefit much from a set of scoops.

WilliamE92 · 01-21-2011, 12:40 PM

Cons: they dont work

Pros: placebo effect will make your butt dyno tingle

chiaobaby · 01-21-2011, 01:21 PM

On any turbo or supercharged engines air scoops do not do a thing for our engines because the compressors in a turbo and supercharger are increasing the air pressure going into the engine. Scoops or ducts only work on N/A ENGINES (like ramair intakes)

Doug007 · 01-21-2011, 01:35 PM

Pro: One more thing for your mod list

Con: Dollars out of your pocket for something that has no measurable effect on performance

Spydeputy · 01-21-2011, 03:55 PM

No dyno specs support any gains.

shockin330i · 01-21-2011, 04:00 PM

Quote:

Originally Posted by Spydeputy

No dyno specs support any gains.

lol, how would they? They need air.

kyleb350 · 01-21-2011, 04:19 PM

I was skeptical to whether or not these added power, but I had purchased an early version of these and tested them out with the AFE intake I already had. Before I had them, after a few full throttle pulls, the intake filters would get extremely hot. After installing them, I performed the same test and the intakes were only slightly warmer than the ambient temperature outside. I will say at highway speeds, they helped with throttle response.

I thought "Placebo effect?"... maybe, but I could swear once I parted out my 335i and went back to the stock intake tract, it didn't seem as lively. If you have the DCI/scoop combo with a tune, I'm sure you will see some benefit.

Willizm · 01-21-2011, 04:26 PM

these scoops are as useful as ram air on a trans am. Opps, meant to say useless.

etiliko · 01-21-2011, 06:31 PM

Quote:

Originally Posted by chiaobaby

On any turbo or supercharged engines air scoops do not do a thing for our engines because the compressors in a turbo and supercharger are increasing the air pressure going into the engine. Scoops or ducts only work on N/A ENGINES (like ramair intakes)

This absolutely FALSE. A real air scoop can give a real benefit also on turbocharged engine. Increasing pressure before the compressor means that the turbo has to do less work to obtain the target boost pressre.

Tee212 · 01-21-2011, 06:41 PM

lol how does one increase atmospheric pressure before the turbo inlet....most certainly not from a silly scoop.

BrianMN · 01-21-2011, 06:59 PM

Quote:

Originally Posted by etiliko

This absolutely FALSE. A real air scoop can give a real benefit also on turbocharged engine. Increasing pressure before the compressor means that the turbo has to do less work to obtain the target boost pressre.

Quote:

Originally Posted by Tee212

lol how does one increase atmospheric pressure before the turbo inlet....most certainly not from a silly scoop.

Umm...yes.

Think of if it was the stock OEM airbox. If you're doing 70mph, there is a significant amount of CFM being pushed into the scoops and being forced into the airbox, thus raising pressure.

If it's a DCI, at speed it's kinda supplying colder/fresh air to the intake area. l

infinitekidM2C · 01-21-2011, 06:59 PM

Pros = Haha

Cons = Not free

dzenno · 01-21-2011, 07:52 PM

Depends

Al Blue4.6l · 01-21-2011, 08:30 PM

Quote:

Originally Posted by chiaobaby

On any turbo or supercharged engines air scoops do not do a thing for our engines because the compressors in a turbo and supercharger are increasing the air pressure going into the engine. Scoops or ducts only work on N/A ENGINES (like ramair intakes)

and even then they usually do nothing unless they are well designed and the scoops are very tall (there is very little air movement over the first ~1.5" of the hood

Proper Motion LLC · 01-21-2011, 08:39 PM

Only benefit I can think of is possibly getting colder air around my Injen DCI.

Dj_Frost · 01-21-2011, 10:25 PM

For $39 you can't go wrong

Thumperx · 01-22-2011, 01:24 AM

Quote:

Originally Posted by Dj_Frost

For $39 you can't go wrong

+1

roadkillrob · 01-22-2011, 06:31 AM

Quote:

Originally Posted by Dj_Frost

For $39 you can't go wrong

Except you don't have $39 bucks!

No measurable gain since the turbos are sucking are much faster than the ram air could help - the red ones do look a bit cool behind the grills I will admit though!

etiliko · 01-22-2011, 08:00 AM

Quote:

Originally Posted by Tee212

lol how does one increase atmospheric pressure before the turbo inlet....most certainly not from a silly scoop.

I speak of effective air scoop, the statement that a scoop on turbo engine is ineffective is false.

01-21-2011, 02:13 AM	#1
e90x2011 First Lieutenant 37 Rep 327 Posts Drives: 2011 e90 Join Date: Jan 2011 Location: Diamond Bar iTrader: (2)	Pros Cons of Ram Air Scoops? Pros and Cons? Purpose? Other than a good look through the grills
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01-21-2011, 02:57 AM	#2
335i Colonel 208 Rep 2,320 Posts Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Swiss iTrader: (4) Garage List 2008 335i [9.00]	never thought that i need to buy scoops for look, they dont harm but they good at high speeds __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) https://www.youtube.com/user/aistis7..._as=subscriber
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01-21-2011, 12:11 PM	#3
SV Concepts III Lieutenant General 403 Rep 16,968 Posts Drives: BMW Duh Join Date: Apr 2005 Location: Santa Clara iTrader: (13)	If you have an open air intake then they are worth it, they will channel more air directly into the open air system. The factory intake can't benefit much from a set of scoops.
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01-21-2011, 12:40 PM	#4
WilliamE92 First Lieutenant 24 Rep 318 Posts Drives: 2013 EB F30 335 MT Join Date: Aug 2009 Location: CA iTrader: (1)	Cons: they dont work Pros: placebo effect will make your butt dyno tingle
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01-21-2011, 01:21 PM	#5
chiaobaby First Lieutenant 9 Rep 332 Posts Drives: 335i Join Date: Jul 2009 Location: NYC iTrader: (7)	On any turbo or supercharged engines air scoops do not do a thing for our engines because the compressors in a turbo and supercharger are increasing the air pressure going into the engine. Scoops or ducts only work on N/A ENGINES (like ramair intakes)
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01-21-2011, 01:35 PM	#6
Doug007 Second Lieutenant 6 Rep 291 Posts Drives: Spacegrau 2009 335i 6MT Join Date: Feb 2010 Location: Houston, TX iTrader: (0)	Pro: One more thing for your mod list Con: Dollars out of your pocket for something that has no measurable effect on performance __________________ 2009 Spacegrau 335i
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01-21-2011, 03:55 PM	#7
Spydeputy Brigadier General 222 Rep 3,523 Posts Drives: 2015 F23 M235i/2008,E90,335xi Join Date: Aug 2008 Location: The County, Maryland iTrader: (19) Garage List 2017 X5 M Sport Pac ... [0.00] 2015 M235i, F23 [0.00]	No dyno specs support any gains.
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01-21-2011, 04:19 PM	#9
kyleb350 Brigadier General 432 Rep 4,719 Posts Drives: '21 X3MC Join Date: Jun 2008 Location: Milwaukee iTrader: (6)	I was skeptical to whether or not these added power, but I had purchased an early version of these and tested them out with the AFE intake I already had. Before I had them, after a few full throttle pulls, the intake filters would get extremely hot. After installing them, I performed the same test and the intakes were only slightly warmer than the ambient temperature outside. I will say at highway speeds, they helped with throttle response. I thought "Placebo effect?"... maybe, but I could swear once I parted out my 335i and went back to the stock intake tract, it didn't seem as lively. If you have the DCI/scoop combo with a tune, I'm sure you will see some benefit.
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01-21-2011, 04:26 PM	#10
Willizm Captain 26 Rep 610 Posts Drives: 2009 335Xi and 01 Trans Am WS6 Join Date: Oct 2009 Location: Joliet, Il iTrader: (0)	these scoops are as useful as ram air on a trans am. Opps, meant to say useless.
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01-21-2011, 06:41 PM	#12
Tee212 Banned 83 Rep 4,541 Posts Drives: yes Join Date: Oct 2008 Location: Riverside iTrader: (9) Garage List 2010 335 [8.00]	lol how does one increase atmospheric pressure before the turbo inlet....most certainly not from a silly scoop.
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01-21-2011, 06:59 PM	#14
infinitekidM2C Major General 4323 Rep 5,738 Posts Drives: 2019 M2 Competition Join Date: Nov 2007 Location: Orange County, CA iTrader: (4) Garage List 2019 M2 COMPETITION [9.75] 2008 135i (my old car) [7.56]	Pros = Haha Cons = Not free
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01-21-2011, 07:52 PM	#15
dzenno Banned 319 Rep 5,876 Posts Drives: Join Date: Feb 2006 iTrader: (1)	Depends
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01-21-2011, 08:39 PM	#17
Proper Motion LLC Custom Powder Coater 153 Rep 2,784 Posts Drives: White 335i Sedan Join Date: Dec 2008 Location: Orange County CA iTrader: (2)	Only benefit I can think of is possibly getting colder air around my Injen DCI. __________________ www.propermotion714.com
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01-21-2011, 10:25 PM	#18
Dj_Frost Second Lieutenant 17 Rep 268 Posts Drives: 07 335i & 94 3000GT VR4 Join Date: Jul 2010 Location: Panama iTrader: (2)	For $39 you can't go wrong __________________ [Sold] e36 318i MT - [Sold] e46 330Ci AT [Race] 1994 Rare Mitsubishi 3000GT VR4 [Daily] 2007 BMW E92 335i 6MT SPECS: [SpaceGray.Sport.Premium.Nav] MODS: [BTDCI.AAFMIC.AABOV.EBAYDP.?EXHAUST.VPROCEDE.BSHOCC]
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