Welcome to the North American Subaru Impreza Owners Club Thursday October 27, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Archives > NASIOC Archives > Technical Forum Archive

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 02-15-2000, 12:57 AM   #1
Scooby Newbie
Member#: 761
Join Date: Jan 2000
Lightbulb ATTN: apex s-afc users=vents water protector off ,airflow better??

i need a group of apex s-afc users to test an idea. useing an air intake and afc with vent water protector off on air intake side, i think we could test the air flow of the intake . does the vent suck air out, or does it help the filter buy pushing air in????? useing the afc we could monitor the air flow.....please e-mail if your interested in trying my experiment.....
* Registered users of the site do not see these ads.
GOTA25RSIMPREZA is offline  
Sponsored Links
* Registered users of the site do not see these ads.
Old 02-15-2000, 06:11 AM   #2
HRE | giulio
Former Vendor
Member#: 481
Join Date: Nov 1999
Location: NY USA

i wont have a chance to do it this week, but i will next week. It'd be interesting to see an aftermarked scoop that replaces the vent!

I'm pretty sure the vent sucks out. That's the point of them being there... well then again, what's the point of our non-functional hood scoops?

I have a cold air intake (shielded area) right under that vent too. HM! interesting...
HRE | giulio is offline  
Old 02-15-2000, 09:17 AM   #3
Scooby Guru
Member#: 329
Join Date: Sep 1999
Chapter/Region: Tri-State
Location: NJ
1995 325i
Arctic Gray


The hood vents allow trapped air in the engine compartment to be sucked out as air velocity over the vent rises. This reduces lift & is used in such cars as the Viper GTS-R & the Jag XK-R.

RidinLow is offline  
Old 03-22-2000, 09:25 AM   #4
Scooby Newbie
Member#: 761
Join Date: Jan 2000

should i take it off? or put it back on , i know have a hks super flow air intake, should the vent suck air out of the filter?thus reduceing the airflow?
GOTA25RSIMPREZA is offline  
Old 03-22-2000, 09:38 AM   #5
Scooby Newbie
Member#: 877
Join Date: Feb 2000
Chapter/Region: South East
Location: Orlando, FL
1998 2.5RS


I might be crazy but when i take my water protector off, i could swear my car has a little more power but i have no way to test this. The filter on my weapon*r sits alomost right under the vent. Maybe it's just because it sounds louder with the vent open.

BAMA RS is offline  
Old 03-22-2000, 11:07 AM   #6
Joe Hogan
Scooby Specialist
Member#: 699
Join Date: Jan 2000
Location: Green Mountain State
2002 golf TDI


Just a thought ... anything you do to reduce engine compartment temperatures would probably be a good thing for most aftermarket intakes.
Regardless of the direction of the air, in or out of the hood vent, the air ingested by the engine would probably be cooler.

My 2 yen,

Joe Hogan
Joe Hogan is offline  
Old 03-22-2000, 04:45 PM   #7
Scooby Newbie
Member#: 1091
Join Date: Mar 2000


Very interesting, I'll try it once my intake kit is in. However when is rains, I think water will hit the filter...

Take care... :- )
nsr is offline  
Old 03-23-2000, 03:21 AM   #8
Scooby Newbie
Member#: 326
Join Date: Sep 1999
Location: Kaneohe, HI. U.S.A.
99 WRX-STi
Pewter Metallic


I can positivly say that the side vents help stabilize the car. Before I took them off my car used to wander at high speeds, but when I took them off, at over 100 mph the car was stuck to the ground, no wandering.
WRX-STi is offline  
Old 06-15-2000, 05:05 PM   #9
Scooby Specialist
Member#: 627
Join Date: Dec 1999
Location: boston
MY96 outback wagon


so has anyone who owns a S-AFC actually run it with/without the hood vent to compare the difference in air flow?
cj917 is offline  
Old 06-16-2000, 09:59 AM   #10
Scooby Newbie
Member#: 887
Join Date: Feb 2000

I don't think you will notice any difference in airflow at all. There might be a difference in power because you are sucking in cold air, but I think the actual volume of air wil lbe the same.
Wreckleford is offline  
Old 06-16-2000, 10:10 AM   #11
Scooby Newbie
Member#: 460
Join Date: Oct 1999
Location: Overland Park, KS, USA
1995 Impreza Wagon
Brilliant Red/Slade


Get the 22B vents.
Bahumut is offline  

Thread Tools
Display Modes

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Attn: All EcuTek, UTEC, Link, AEM & S-AFC Users!! schwarzenegger Vancouver Impreza Club Forum -- VIC 22 11-26-2003 12:20 AM
Does anyone have an Apex S-afc here?!?! HRE | giulio Tri-State Area Forum 11 05-19-2001 11:37 PM
WTB Apex S-AFC Sam Kaufman Mid West Subaru Owners Club Forum -- MWSOC 0 05-05-2001 10:53 AM
anybody know a gooed place to get an apex Super AFC installed for a decent price! malik1 Bay Area Impreza Club Forum -- BAIC 8 08-04-2000 08:54 AM
Apex sufer afc tmr Canada Region Forum 3 06-26-2000 09:03 AM

All times are GMT -4. The time now is 10:44 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.