Does Air Scoops make a difference?

AltecBX · 02-15-2010, 04:45 PM

Are they worth it?

blisstik · 02-15-2010, 04:47 PM

The cyba one's for $40 to me is. Whether they work or not, $40 isn't a big deal to me. I also coupled it with K&N drop-in filter. I also could've gone the DCI route but I'm still warranty and would like the car to look stock.

skim7x · 02-15-2010, 04:48 PM

doubt it... i have 'em and i don't notice much difference... I'd say if you can get them for <$20 maybe get them... *shrug*

persian54 · 02-15-2010, 06:15 PM

I do like the way they look heh

cn555ic · 02-15-2010, 06:19 PM

I think it works in a sense that its circulates air into the engine bay when on the highway...as for performance gains they are very nominal...

Ferre86 · 02-15-2010, 06:29 PM

just a mod, nothing else.

AltecBX · 02-16-2010, 03:28 AM

Looking at getting the aFe Stage 2 intake. Was wondering if I should get the dynamic air scoops with it. What are ya thoughts.

roadkillrob · 02-16-2010, 08:57 AM

If they do anything at all, it would be with a closed pressurized system, once you put open filters on, they really can't make any difference what so ever.

twinturbopg · 02-16-2010, 07:17 PM

lol lighten wallet

there are a couple of other posts here that are older that hammer this out...but long story short RPI tells us all about a few hp more at above 70mph the ability to gauge that is hard without proper testing. I am running cyba scoops and DCI and they work great...I can feel the difference at times.

Hit_Apex · 02-16-2010, 08:30 PM

I can tell you I picked up a couple MPH on high speed sections of the track in the E46 M3 after installing RPI scoops. Unfortunately, I don't track the 335i often or have a baseline precise enough to determine if there is improvement for the N54. FI and NA senstivity to the changed airflow are different too, making this comparison, and hence this post worthless. Hey, they do look cool though

ToadHollow · 02-16-2010, 08:48 PM

They will make a difference in performance, but only if you're rollin' at 60mph + ........

That would be with a DCI setup ....... doubt they're going to contribute at all with the OEM box. Limited breathing room.

Syndicategt · 02-16-2010, 09:13 PM

Save the money for a FMIC or DP since you already have the tune. I do not notice anything using the good ol' butt dyno, whether they help out at high speeds is debatable.

alpinedevil335 · 02-16-2010, 09:35 PM

Anyone ever log AIT's without scoops?
My logs show 22 deg over ambient temp. WITH scoops.
Ambient temp was ~82 deg @ 55-70 MPH.

Craig@SupremePower · 02-16-2010, 10:20 PM

every lil bit helps..

samchoi604 · 02-16-2010, 10:23 PM

You also scoop up more dirt and your filter will become dirty quicker.

ToadHollow · 02-16-2010, 10:32 PM

Quote:

Originally Posted by samchoi604

You also scoop up more dirt and your filter will become dirty quicker.

Are ya sure 'bout that? Seems there was just as much picked up without the scoops installed as there was with them ......

Shieldze1025 · 02-17-2010, 08:22 AM

I think the $120 or so for the AFE scoops is outrageous, but PM cyba he sells them shipped for under 40. I figured every little bit of cold air helps for my hot air intake aka DCI, so for $40 I got them. Still waiting for them though, I'll chime back in when I get them.

ianthegreat · 02-17-2010, 08:28 AM

I used them in the summer just for the fact they push more air under the engine bay. In Texas is gets pretty hot and humid so I thought a few degrees cooler couldn't hurt. As far as performance.. i think you're dreaming. I did notice more dirt/rocks in the engine bay area.

Needbmwpartzz · 12-10-2017, 11:41 AM

Silicon hose GTA

roadkillrob · 12-11-2017, 08:58 PM

you would have to hit 700+ mph for them to do anything, it is simple math.

Equation is Pra = (mph)^2 x 0.0000176

Where Pra = Pressure in PSI, mph = vehicle speed in mph, 0.0000176 is the constant for this equation.

So, Pra = 700^2 x 0.0000176
Pra = 8.624 psi

Stock boost is 8.5 psi, so at 700 mph, you would be making the same pressure as the turbo, so net no gain - everything over 700 mph would result in more pressure than the turbo itself is actually making, but then you would create some compressor surge. It also will not pull any colder air since it is a high pressure area when you are moving, it isn't going to scoop any more air.

If you like the looks, then fine, but no one can seriously think they do a single thing - it is like blowing into your vacuum cleaner and thinking it makes more suction.

joeinsd · 12-12-2017, 02:16 AM

Almost an 8 year old thread...

marcvtec · 12-12-2017, 04:49 PM

Quote:

Originally Posted by roadkillrob

you would have to hit 700+ mph for them to do anything, it is simple math.

Equation is Pra = (mph)^2 x 0.0000176

Where Pra = Pressure in PSI, mph = vehicle speed in mph, 0.0000176 is the constant for this equation.

So, Pra = 700^2 x 0.0000176
Pra = 8.624 psi

Stock boost is 8.5 psi, so at 700 mph, you would be making the same pressure as the turbo, so net no gain - everything over 700 mph would result in more pressure than the turbo itself is actually making, but then you would create some compressor surge. It also will not pull any colder air since it is a high pressure area when you are moving, it isn't going to scoop any more air.

If you like the looks, then fine, but no one can seriously think they do a single thing - it is like blowing into your vacuum cleaner and thinking it makes more suction.

hmmm...

Going by your logic, any intake upgrade does not work then.
Including the intake installed on your car currently.

It is well documented that all added intake upgrades help, more volume of air and if colder is always better.

02-15-2010, 04:45 PM	#1
AltecBX Colonel 336 Rep 2,663 Posts Drives: BMW 335xi Sedan; BMW M3 ZCP Join Date: Nov 2007 Location: NYC iTrader: (0) Garage List 2018 BMW M3 ZCP [0.00] 2007 BMW 335Xi [0.00]	Does Air Scoops make a difference? Are they worth it? __________________ 335xi Sedan 6AT \| Weather(70-85°F) \| N54 Tune Comparison Chart \|\| N54 Turbo Upgrade Comparison Chart -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps) †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 \| 0-60 in 4.0sec \|\| †Cobb E30 LT (35% Ethanol/65% 93 Octane) \| 0-60 in 3.9sec AR Design Catless DP \| BMS DCI + OCC \| ETS 5 FMIC \| Alpina B3 Trans Flash \|235/265 19" Michelin PSS Last edited by AltecBX; 02-15-2010 at 11:05 PM..
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02-15-2010, 04:47 PM	#2
blisstik Lieutenant Colonel 158 Rep 1,677 Posts Drives: E92 Join Date: Jul 2009 Location: California iTrader: (14)	The cyba one's for $40 to me is. Whether they work or not, $40 isn't a big deal to me. I also coupled it with K&N drop-in filter. I also could've gone the DCI route but I'm still warranty and would like the car to look stock.
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02-15-2010, 04:48 PM	#3
skim7x Colonel 213 Rep 2,558 Posts Drives: 335i, C63 AMG Join Date: Sep 2006 Location: USA iTrader: (4) Garage List 2007 335i [10.00]	doubt it... i have 'em and i don't notice much difference... I'd say if you can get them for <$20 maybe get them... shrug __________________ '07 Space Gray 335i coupe - R.I.P. COBB ProTuned \| AMS \| CP-e \| BMS \| Quaife
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02-15-2010, 06:15 PM	#4
persian54 Lieutenant General 970 Rep 15,818 Posts Drives: M760/G83M4 Join Date: Jun 2009 Location: The Valley, SoCal iTrader: (298)	I do like the way they look heh __________________ From E93 335i to E89 Z4 to E93 M3/E89 Z4 to E350/SL550
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02-15-2010, 06:19 PM	#5
cn555ic 460 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	I think it works in a sense that its circulates air into the engine bay when on the highway...as for performance gains they are very nominal...
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02-15-2010, 06:29 PM	#6
Ferre86 Captain 38 Rep 944 Posts Drives: E93 M3/H2/SL350/Panamera 4/ Join Date: Mar 2009 Location: Turkey iTrader: (0)	just a mod, nothing else. __________________ http://www.youtube.com/user/Ferre86 \| e93 M-DCT ESS VT2-625 \| Akra Slip-on \| Challenge Race Catless x-pipe \| Challenge front lip \| Challenge Diffuser \| Carbon front grilles \| defi gauges control unit \| Macht Schnell gauge panel \| E93 M3 trunk Spoiler \| IND Carbon Fiber Side Markers \|
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02-16-2010, 03:28 AM	#7
AltecBX Colonel 336 Rep 2,663 Posts Drives: BMW 335xi Sedan; BMW M3 ZCP Join Date: Nov 2007 Location: NYC iTrader: (0) Garage List 2018 BMW M3 ZCP [0.00] 2007 BMW 335Xi [0.00]	Looking at getting the aFe Stage 2 intake. Was wondering if I should get the dynamic air scoops with it. What are ya thoughts. __________________ 335xi Sedan 6AT \| Weather(70-85°F) \| N54 Tune Comparison Chart \|\| N54 Turbo Upgrade Comparison Chart -PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps) †Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 \| 0-60 in 4.0sec \|\| †Cobb E30 LT (35% Ethanol/65% 93 Octane) \| 0-60 in 3.9sec AR Design Catless DP \| BMS DCI + OCC \| ETS 5 FMIC \| Alpina B3 Trans Flash \|235/265 19" Michelin PSS
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02-16-2010, 08:57 AM	#8
roadkillrob Major General 892 Rep 5,475 Posts Drives: 08 335i,22 X3M, 2012 C63 Black Join Date: Jul 2007 Location: NH iTrader: (15)	If they do anything at all, it would be with a closed pressurized system, once you put open filters on, they really can't make any difference what so ever. __________________ 2025 X5 Msport 2008 E93 335i FBO 2012 Mercedes C63 Black Series Alanite Grey
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02-16-2010, 07:17 PM	#9
twinturbopg How you like them apples? 41 Rep 1,492 Posts Drives: 335i Join Date: Sep 2009 Location: SD & OC its where I belong iTrader: (5) Garage List 2007 BMW 335i [0.00]	lol lighten wallet there are a couple of other posts here that are older that hammer this out...but long story short RPI tells us all about a few hp more at above 70mph the ability to gauge that is hard without proper testing. I am running cyba scoops and DCI and they work great...I can feel the difference at times. __________________ V5 rev2.5 \| VExhaust \| V1 KW \| V701 \| H&R Sway Bars \| Ram Air Scoops \| DCI WTB: stock mirror cover for pre-lci e90
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02-16-2010, 08:30 PM	#10
Hit_Apex Riding the knock sensor 3047 Rep 1,966 Posts Drives: 21 X5MC \| 23 M4CSL Join Date: May 2008 Location: PCH iTrader: (1) Garage List 2021 BMW X5MC [10.00]	I can tell you I picked up a couple MPH on high speed sections of the track in the E46 M3 after installing RPI scoops. Unfortunately, I don't track the 335i often or have a baseline precise enough to determine if there is improvement for the N54. FI and NA senstivity to the changed airflow are different too, making this comparison, and hence this post worthless. Hey, they do look cool though __________________
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02-16-2010, 08:48 PM	#11
ToadHollow Once upon a time ...... 279 Rep 5,048 Posts Drives: 2008 JB E92 - SOLD 5/2010 Join Date: Sep 2008 Location: Asti, Italy & Austin, Texas iTrader: (16) Garage List 2008 E92 335i [8.00]	They will make a difference in performance, but only if you're rollin' at 60mph + ........ That would be with a DCI setup ....... doubt they're going to contribute at all with the OEM box. Limited breathing room. __________________
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02-16-2010, 09:13 PM	#12
Syndicategt Brigadier General 164 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Save the money for a FMIC or DP since you already have the tune. I do not notice anything using the good ol' butt dyno, whether they help out at high speeds is debatable. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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02-16-2010, 09:35 PM	#13
alpinedevil335 Lieutenant 20 Rep 433 Posts Drives: Alpine White 335i Join Date: Apr 2009 Location: So Cal (562) iTrader: (0)	Anyone ever log AIT's without scoops? My logs show 22 deg over ambient temp. WITH scoops. Ambient temp was ~82 deg @ 55-70 MPH.
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02-16-2010, 10:20 PM	#14
Craig@SupremePower G.O.A.T.! 1018 Rep 74,992 Posts Drives: '18 GMC Yukon XL Join Date: Mar 2008 Location: New Jersey iTrader: (14)	every lil bit helps..
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02-16-2010, 10:23 PM	#15
samchoi604 Colonel 64 Rep 2,334 Posts Drives: black on black Join Date: Mar 2009 Location: Burnaby, BC iTrader: (3)	You also scoop up more dirt and your filter will become dirty quicker.
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02-17-2010, 08:22 AM	#17
Shieldze1025 Keepin' America Free 77 Rep 1,260 Posts Drives: F10 535i Join Date: Dec 2009 Location: Haleiwa, HI iTrader: (7)	I think the $120 or so for the AFE scoops is outrageous, but PM cyba he sells them shipped for under 40. I figured every little bit of cold air helps for my hot air intake aka DCI, so for $40 I got them. Still waiting for them though, I'll chime back in when I get them. __________________ F10 535i \| Retired: E60 ///M5 \| E92 335i "If everything seems under control, you're not going fast enough" -Mario Andretti
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02-17-2010, 08:28 AM	#18
ianthegreat Colonel 63 Rep 2,314 Posts Drives: n54 Join Date: Apr 2008 Location: Pittsburgh/Houston iTrader: (1)	I used them in the summer just for the fact they push more air under the engine bay. In Texas is gets pretty hot and humid so I thought a few degrees cooler couldn't hurt. As far as performance.. i think you're dreaming. I did notice more dirt/rocks in the engine bay area.
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12-10-2017, 11:41 AM	#19
Needbmwpartzz Colonel 858 Rep 2,792 Posts Drives: 2009 bmw 328i x-drive Join Date: Feb 2014 Location: Kitchener/Waterloo iTrader: (0)	Silicon hose GTA
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12-11-2017, 08:58 PM	#20
roadkillrob Major General 892 Rep 5,475 Posts Drives: 08 335i,22 X3M, 2012 C63 Black Join Date: Jul 2007 Location: NH iTrader: (15)	you would have to hit 700+ mph for them to do anything, it is simple math. Equation is Pra = (mph)^2 x 0.0000176 Where Pra = Pressure in PSI, mph = vehicle speed in mph, 0.0000176 is the constant for this equation. So, Pra = 700^2 x 0.0000176 Pra = 8.624 psi Stock boost is 8.5 psi, so at 700 mph, you would be making the same pressure as the turbo, so net no gain - everything over 700 mph would result in more pressure than the turbo itself is actually making, but then you would create some compressor surge. It also will not pull any colder air since it is a high pressure area when you are moving, it isn't going to scoop any more air. If you like the looks, then fine, but no one can seriously think they do a single thing - it is like blowing into your vacuum cleaner and thinking it makes more suction. __________________ 2025 X5 Msport 2008 E93 335i FBO 2012 Mercedes C63 Black Series Alanite Grey
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12-12-2017, 02:16 AM	#21
joeinsd Captain 288 Rep 899 Posts Drives: Stock 2010 e92 335i M Sport Join Date: Apr 2015 Location: San Diego iTrader: (9)	Almost an 8 year old thread... __________________ IG: 335_in_SD
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