BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      05-17-2012, 09:04 AM   #1
Flash237
Private
Flash237's Avatar
16
Rep
94
Posts

Drives: BMW 135i
Join Date: Feb 2012
Location: Miami

iTrader: (0)

Scoops @ higher boost

I know the scoops work best as a placebo effect than anything else but if your running 14psi+ do you think it could make a slight difference or still nothing at all?

Any experiences? Noticeable differences?

Any input would be appreciated
__________________
2009 Blue water 135i M pacakge/ CF Interior Trim / JB4 / ETS FMIC / ETS Charge Pipe W/ Tial Q / AFE Scoops / AA Downpipes / AA Exhaust

Appreciate 0
      05-17-2012, 09:45 AM   #2
RimasRS
Colonel
RimasRS's Avatar
85
Rep
2,438
Posts

Drives: BMW X3 SD
Join Date: Sep 2010
Location: Europe

iTrader: (0)

Well IMO scoops are to collect more dust and garbage to your filter box
Appreciate 0
      05-17-2012, 08:07 PM   #3
ken1137
Brigadier General
ken1137's Avatar
United_States
89
Rep
3,732
Posts

Drives: BMW S1000XR
Join Date: Jun 2011
Location: Gilbert, AZ

iTrader: (7)

Garage List
2009 e90 335i  [6.40]
I have aFe scoops and did not notice a difference with higher boost, but I did not remove them either
__________________

BMWCCA member
Appreciate 0
      05-17-2012, 08:15 PM   #4
Suds
/M Enthusiast
Suds's Avatar
United_States
1596
Rep
1,617
Posts

Drives: Responsiblish
Join Date: Aug 2010
Location: Lone Star State

iTrader: (1)

All that the scoops could possibly do is boost you to your boost limit quicker. That would be hard to feel.
Appreciate 0
      05-17-2012, 10:12 PM   #5
1speedbike
Brigadier General
1speedbike's Avatar
728
Rep
3,272
Posts

Drives: 2022 X4 M40i, 2008 135i
Join Date: Jun 2008
Location: MKE

iTrader: (15)

If anything, they'd have a bigger effect at higher driving speeds rather than higher boost levels. Driving faster and scooping up the air quicker into the intake tract might have a tiny effect. But not a huge one. Probably good for 1 whp.
__________________
Scruffy's gonna die the way he lived... Mmhm.


Appreciate 0
      05-18-2012, 03:10 AM   #6
SSSnakeman
Private First Class
15
Rep
187
Posts

Drives: 330
Join Date: Apr 2011
Location: PA

iTrader: (3)

I was running FBO Cobb Stage 2+ with a K&N drop in, so around 18psi. I switched to DCIs and didn't notice anything positive from it. After installing Cyba scoops though it seemed to be an improvement. Hope that helps. IMO they are worth it for $49.
Appreciate 0
      05-18-2012, 06:03 AM   #7
Mr Kleen
teh porcupine
Mr Kleen's Avatar
South Korea
96
Rep
1,726
Posts

Drives: 2020 Tesla 3 LR AWD
Join Date: May 2011
Location: penthouse

iTrader: (1)

Garage List
2013 BMW X1  [10.00]
If those scoops helped, they'd be original equipment.
The turbo is sucking up air, the only way to boost intake efficiency is to enlarge the intake pipes themselves.

Imagine sucking air through a straw: even if you put a funnel on the end of the straw you won't suck in any more air. The amount of air you move is dependent on your lungs (the turbo) and the straw (the intake piping).

But if you like them, install them.
Appreciate 0
      05-18-2012, 10:00 AM   #8
Flash237
Private
Flash237's Avatar
16
Rep
94
Posts

Drives: BMW 135i
Join Date: Feb 2012
Location: Miami

iTrader: (0)

Im putting them on for looks. F it
__________________
2009 Blue water 135i M pacakge/ CF Interior Trim / JB4 / ETS FMIC / ETS Charge Pipe W/ Tial Q / AFE Scoops / AA Downpipes / AA Exhaust

Appreciate 0
      05-18-2012, 12:28 PM   #9
135i_vs_
Captain
135i_vs_'s Avatar
United_States
72
Rep
697
Posts

Drives: M5, 135i, 335d, F10 550xi
Join Date: Sep 2011
Location: CT

iTrader: (0)

Quote:
Originally Posted by Mr Kleen View Post
...
Imagine sucking air through a straw: even if you put a funnel on the end of the straw you won't suck in any more air. The amount of air you move is dependent on your lungs (the turbo) and the straw (the intake piping)...
Aren't the scoops sort of "channeling"/"forcing" more air into the intake system?

As to your explaination, pushing more air up the straw?

I have the red RPI scoops, not exactly sure if I felt a difference, car is fast as hell already. Maybe I did notice a better pull when doing highway runs (speeds above 80 mph...).
Appreciate 0
      05-18-2012, 01:28 PM   #10
Nifty
Second Lieutenant
United_States
74
Rep
267
Posts

Drives: 2022 AWD M3
Join Date: Jun 2009
Location: Illinois

iTrader: (1)

Take a look at this...
http://www.paladinmicro.com/documents/RamAirMyth.pdf
Appreciate 0
      05-18-2012, 01:31 PM   #11
VMRWheels
General
VMRWheels's Avatar
2037
Rep
25,989
Posts

Drives: BMW
Join Date: Jun 2007
Location: Anaheim, CA

iTrader: (4)

Garage List
2013 BMW M3  [10.00]
2015 BMW M4  [0.00]
2013 BMW F30  [0.00]
2014 BMW F22  [0.00]
2013 BMW F06  [0.00]
I feel that hood scoops will just catch a ton of dust under your hood unless it was built directly into the intercooler like Subarus.

__________________
Appreciate 0
      05-18-2012, 10:32 PM   #12
gmane
Second Lieutenant
24
Rep
277
Posts

Drives: m235i
Join Date: Jan 2012
Location: Florida

iTrader: (1)

Quote:
Originally Posted by Nifty
That was a good read.. Guess ppl will have to find another reason to say why they installed a scoop maybe it just helps to lower air temperature and allows for "slightly" cooler air to enter the airbox..
Appreciate 0
      05-18-2012, 10:49 PM   #13
1speedbike
Brigadier General
1speedbike's Avatar
728
Rep
3,272
Posts

Drives: 2022 X4 M40i, 2008 135i
Join Date: Jun 2008
Location: MKE

iTrader: (15)

Quote:
Originally Posted by VMRWheels View Post
I feel that hood scoops will just catch a ton of dust under your hood unless it was built directly into the intercooler like Subarus.
Lol, I think OP is talking about ram air scoops like these, not hood scoops like on the Subie's. Works great on STI's, Minis, and the like, but... a 1er with a hood scoop... ewwww!
__________________
Scruffy's gonna die the way he lived... Mmhm.


Appreciate 0
      05-18-2012, 11:01 PM   #14
int2str
Captain
int2str's Avatar
Germany
80
Rep
655
Posts

Drives: 2008 135i
Join Date: Feb 2010
Location: San Diego, CA

iTrader: (2)

I never thought of "ram air" when talking about the scoops. In the BMW case, I'd like to think that the scoops may help avoid stalling of the air in the intake tract.

On [recent] BMWs, the air intake is angled 90 degrees down and presents as two holes in a plane. Imagine for a moment that the engine is off, and not sucking in air. If the car is moving forward (despite the engine being off) - especially faster - the air rushes past these openings. With my limited knowledge of fluid dynamics, I think this could cause stalling of the air and essentially creating a vacuum in the intake tract. Now of course the engine running causes negative pressure in the intake and thus sucks in air - even against the stalling force.

Based on that (quite possibly flawed) assumption, I could imagine that the air scoops actually redirecting incoming air upwards, would aid in airflow by reducing the stalling/slowdown of incoming air.

Again, quite possibly wrong, but just my $0.02...
Appreciate 0
      05-19-2012, 04:29 AM   #15
Mr Kleen
teh porcupine
Mr Kleen's Avatar
South Korea
96
Rep
1,726
Posts

Drives: 2020 Tesla 3 LR AWD
Join Date: May 2011
Location: penthouse

iTrader: (1)

Garage List
2013 BMW X1  [10.00]
Quote:
Originally Posted by Nifty View Post
Appreciate 0
      05-19-2012, 05:06 AM   #16
BrokenVert
Resident Kerbalnaut
BrokenVert's Avatar
United_States
477
Rep
10,703
Posts

Drives: Topless Brute/Hybrid Boogaloo
Join Date: Apr 2009
Location: Fahrvergnügen/NY

iTrader: (0)

Quote:
Originally Posted by int2str View Post
I never thought of "ram air" when talking about the scoops. In the BMW case, I'd like to think that the scoops may help avoid stalling of the air in the intake tract.

On [recent] BMWs, the air intake is angled 90 degrees down and presents as two holes in a plane. Imagine for a moment that the engine is off, and not sucking in air. If the car is moving forward (despite the engine being off) - especially faster - the air rushes past these openings. With my limited knowledge of fluid dynamics, I think this could cause stalling of the air and essentially creating a vacuum in the intake tract. Now of course the engine running causes negative pressure in the intake and thus sucks in air - even against the stalling force.

Based on that (quite possibly flawed) assumption, I could imagine that the air scoops actually redirecting incoming air upwards, would aid in airflow by reducing the stalling/slowdown of incoming air.

Again, quite possibly wrong, but just my $0.02...

you wouldnt be stalling the air perse. But the 90 degree angle of the intake ducts to the free stream causes separation of the flow at the forward most point.

Its hard to explain without drawings. But the air rushing around the corner wont be able to hold the corner - no matter what. The scoops will make no difference because the air still has to turn that sudden 90 degrees, which it really cant do efficiently.


If you want redesign the intake track to the filter than something like a GT500 KR hood would be in your future. No turns until the filter is much more efficient.

__________________

Appreciate 0
      05-19-2012, 06:20 PM   #17
trackpilot
Private
11
Rep
79
Posts

Drives: 135i
Join Date: Feb 2011
Location: West Palm Beach, FL

iTrader: (0)

Quote:
Originally Posted by Nifty View Post
Interesting read...
Appreciate 0
      05-19-2012, 06:49 PM   #18
Pig Farmer
Major
340
Rep
1,293
Posts

Drives: E92M
Join Date: May 2010
Location: Florida

iTrader: (0)

Not a fan of scoops that block direct air flow to the radiator. Our cars run hot enough without any help from the scoops.
Appreciate 0
      05-20-2012, 08:10 AM   #19
Freon
Major
United_States
81
Rep
1,051
Posts

Drives: 2009 135i
Join Date: Nov 2007
Location: Indianapolis

iTrader: (3)

The scoops are bunk. Move on.
__________________
2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 03:41 AM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST