Welcome to the North American Subaru Impreza Owners Club Monday November 20, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Normally Aspirated Powertrain

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 07-03-2001, 07:28 PM   #1
Scooby Newbie
Member#: 5155
Join Date: Mar 2001
Location: Miami, Florida USA
2001 Impreza RS 2.5

Exclamation AEM Air Bypass Valve WARNING!!!

Well, here's my good deed for the year...

I know most Suby owners won't be using this device, but I thought it would be wise to share this information anyways.

AEM is voluntarily recalling about 3000 AEM Air Bypass Valvles sold between Aug 2000 and Jan 2001. Apparently, under certain circumstances, the valve may come apart and the diaphragm and/or foam spring may be ingested into the throttle body, sometimes forcing the throttle to stick in an open position. Obviously presentng a driving hazard.

More info in the TURBO & High-Tech Performance magazine - Issue August 2001, page 22 - or www.turbomagazine.com

For even more info, call AEM at 310-484-2322 x500 or visit www.aempower.com


Ps. If you have no idea what product I am describing above, you have nothing to worry about.

* Registered users of the site do not see these ads.
tikinet is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 07-04-2001, 03:40 AM   #2
Subi Ru
Scooby Specialist
Member#: 7848
Join Date: Jun 2001
Chapter/Region: MWSOC
Location: Milwaukee, WI
2002 TS
Sassy girls wear Red!

Default Whoa!

Thanks Tikinet! My husband has an AEM on his Honda (ricemobile!) and was looking at the bypass valves.

I'm glad we haven't bought one yet!

Thanks! Good to know!
Subi Ru is offline   Reply With Quote
Old 07-04-2001, 09:13 AM   #3
Scooby Specialist
Member#: 453
Join Date: Oct 1999
Location: 小さいӔ
2017 Kia Niro
2016 Porsche Cayman GTS


Interesting. I've always been a little suspicious on how well those bypass valves work preventing hydrolock, espcieally when they did the demonstration test 'look the engine still runs even thenw the CAI is COMPLETELY SUBMERGED underwater' of course it'll work then, its like the leaky drinking straw effect. But what about partial splashes and stuff? That might not generate enough suction to make the bypass valve work. Or is the oiling on the CAI head enough to keep out little splashes?

edkwon is offline   Reply With Quote
Old 07-04-2001, 03:59 PM   #4
Scooby Guru
Member#: 3148
Join Date: Dec 2000
Chapter/Region: TXIC
Location: DFW, TX
2012 Mazdaspeed 3
Crystal White Pearl Mica

Default CAI

Speaking from experience....

I have had CAI on the last three cars I owned... 1994 Integra GSR, 1999 Prelude, 2001 2.5RS and you have got to be kidding me if you think I take it off each time it rains! I have never had a problem with the intake even when it has been soaking wet. Splashes and stuff really shouldn't hurt the intake because it is still sucking in air. Companies (Jackson Racing) actually make products that inject a little water into the intake to cool the intake temps for supercharging so a little water is not going to kill the car.... heck, your gasoline has a certain percentages of water in it.

In the demo of the bypass valve, keep in mind that the car was an NSX and sucks air like nothing else... especially when the big cam take over. I am overall impressed with AEM as a company and in my opinion, I would rather buy a product from a company that is not afriad to recall something to fix it instead of a company that tells you to go to... well yeah....

Just my $.03
Texas25RS is offline   Reply With Quote
Old 07-04-2001, 04:30 PM   #5
Scooby Specialist
Member#: 2362
Join Date: Sep 2000
Location: South Carolina, USA
1999 Legacy Outback
Blue w/ Paint Chips & Mud


I deleted my snorkus (see http://www.remarcable.net/misc/legacy_outback/ ) and my engine now draws air in from the fender well. I went through some mud pits last weekend and got an obscene amount of water and mud all over the car and in the fender wells, etc.

No problems although my Amsoil panel filter looks pretty dirty...... the rest of the intake is clean.

A good filter is a must with any intake!
remarcable is offline   Reply With Quote
Old 07-05-2001, 04:16 AM   #6
Scooby Specialist
Member#: 1211
Join Date: Apr 2000
Chapter/Region: SCIC
Location: Southern Cali...
93 Impreza L
Midnight BLK w/ GLD flake


Thanks for the info bro!
Dre2932 is offline   Reply With Quote

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
FS: AEM Intake Bypass Valve (brand new) IBleedRallyBlue Engine/Power/Exhaust 13 10-07-2009 12:12 AM
FS:MY02+ WRX AEM CAI w/Air Bypass Valve - $129 + shipping dclin Private 'For Sale' Classifieds 0 08-09-2005 08:55 PM
AEM Cold Air Intake and Air Bypass Valve jfalcon001 Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 5 09-10-2002 08:45 PM
AEM - Air Bypass Valve tikinet Normally Aspirated Powertrain 9 03-28-2001 10:50 AM
New AEM air bypass valve Keiho Technical Forum Archive 14 09-23-2000 02:07 PM

All times are GMT -4. The time now is 06:55 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.