AEM Cold Air Intake and Air Bypass Valve

jfalcon001 · 09-10-2002, 04:06 PM

i am considering upgrading my stock '02 WRX intake. However i was worried taking in water. I live in Mass and when it rains here, which is not that often, it really comes down. When i saw the AEM cold air intake with the air bypass valve it looked like a god send. However when i went to look up the part number it was listed as N/A. Does anyone know if there is an air bypass for the AEM cold air intake for the '02 WRX? If there isn't, like i suspect does anyone know when AEM plans on releasing it?

Thanks.

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NoxErebus · 09-10-2002, 05:01 PM

I have the AEM CAI (love it!), not sure, but I think the reason that you can't use the bypass valve is because there isn't room enough for it. It's a tight fit as it is, and with the extra 2" or so that the valve would add, I think the intake piping would run into the outside fender. The instructions that come with the CAI specifically tell you *not* to use the bypass valve. Hope this helps.

WRX_02_227 · 09-10-2002, 05:06 PM

From what I have heard its not the room thats a problem.....it is the turbo sucking the valve open when it shouldnt be. Oh yeah....it sucks too...I had one on my N/A Eclipse and the valve broke in half and almost sucked the foam inside the throttle body...that has supposedly been fixed though. I wouldnt worry to much about water though...i think that subject is way over rated. Im on my second car with a CAI and have had 0 problems. Hell, I removed the piece on my bumper in my Eclipse and when it was raining the filter would be in direct contact with the rain. You would really have to drive in some deep water to suck that much in.

Sparks · 09-10-2002, 05:07 PM

Search here in FFI for the words AEM & bypass.

The foam coating on the valve has been know to get SUCKED into the piping and then foul out the turbo.

If you're living in a high water area, consider a short ram/pod filter for more piece of mind. Hydro lock is a VERY expensive lesson.

Shaun

jfalcon001 · 09-10-2002, 05:17 PM

The problem with the bypass breaking up and being sucked into the turbo and clogging the throtal body housing has been fix. So that is no longer a concern... Why wouldn't AEM just shorten the pipe by two inches if the it was a little big that way the bypass would work. Something tells me that there has to be a better reason than room. The turbo sucking it open when it shouldn't be seems more likely.

SJwrx · 09-10-2002, 07:45 PM

I heard on www.subarureviews.com that the AEM actually decreases HP and Torque. I have an Injen Race Div. and its a great performer, but I hate that BOV sound EVERY time I shift. It gets annoying. Air Intakes increase HP by leaning out the air/fuel ratio. Just do a pannel filter until you upgrade your ECU.

About the Air Bypass thing, They sound like they work, but I woudn't trust one to not take in any water.

Rich

P.S. Any intake with a tube size of 2.5" 2.75" or 3.0" can get a bypass valve spliced into it, from what I read on www.injen.com

09-10-2002, 04:06 PM	#1
jfalcon001 Scooby Newbie Member#: 23062 Join Date: Aug 2002 Location: Waltham, MA Vehicle: 2002 Impreza WRX Silver	AEM Cold Air Intake and Air Bypass Valve i am considering upgrading my stock '02 WRX intake. However i was worried taking in water. I live in Mass and when it rains here, which is not that often, it really comes down. When i saw the AEM cold air intake with the air bypass valve it looked like a god send. However when i went to look up the part number it was listed as N/A. Does anyone know if there is an air bypass for the AEM cold air intake for the '02 WRX? If there isn't, like i suspect does anyone know when AEM plans on releasing it? Thanks. * Registered users of the site do not see these ads.

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09-10-2002, 05:01 PM	#2
NoxErebus Scooby Newbie Member#: 21704 Join Date: Jul 2002 Location: Bentonville, AR Vehicle: Sold my WRX 8/21/2009 :'(	I have the AEM CAI (love it!), not sure, but I think the reason that you can't use the bypass valve is because there isn't room enough for it. It's a tight fit as it is, and with the extra 2" or so that the valve would add, I think the intake piping would run into the outside fender. The instructions that come with the CAI specifically tell you not to use the bypass valve. Hope this helps.

09-10-2002, 05:06 PM	#3
WRX_02_227 Scooby Specialist Member#: 12434 Join Date: Nov 2001 Chapter/Region: Tri-State Location: PA Vehicle: 2002 Impreza WRX Aspen White	From what I have heard its not the room thats a problem.....it is the turbo sucking the valve open when it shouldnt be. Oh yeah....it sucks too...I had one on my N/A Eclipse and the valve broke in half and almost sucked the foam inside the throttle body...that has supposedly been fixed though. I wouldnt worry to much about water though...i think that subject is way over rated. Im on my second car with a CAI and have had 0 problems. Hell, I removed the piece on my bumper in my Eclipse and when it was raining the filter would be in direct contact with the rain. You would really have to drive in some deep water to suck that much in.

09-10-2002, 05:07 PM	#4
Sparks Scooby Specialist Member#: 16495 Join Date: Mar 2002 Chapter/Region: South East Location: Jacksonville Vehicle: 2013 BRZ Sterling Silver Metallic	Search here in FFI for the words AEM & bypass. The foam coating on the valve has been know to get SUCKED into the piping and then foul out the turbo. If you're living in a high water area, consider a short ram/pod filter for more piece of mind. Hydro lock is a VERY expensive lesson. Shaun

09-10-2002, 05:17 PM	#5
jfalcon001 Scooby Newbie Member#: 23062 Join Date: Aug 2002 Location: Waltham, MA Vehicle: 2002 Impreza WRX Silver	The problem with the bypass breaking up and being sucked into the turbo and clogging the throtal body housing has been fix. So that is no longer a concern... Why wouldn't AEM just shorten the pipe by two inches if the it was a little big that way the bypass would work. Something tells me that there has to be a better reason than room. The turbo sucking it open when it shouldn't be seems more likely.

09-10-2002, 07:45 PM	#6
SJwrx Scooby Specialist Member#: 14970 Join Date: Feb 2002 Chapter/Region: BAIC Location: San Jose, CA Vehicle: 1997 GF8 multi	I heard on www.subarureviews.com that the AEM actually decreases HP and Torque. I have an Injen Race Div. and its a great performer, but I hate that BOV sound EVERY time I shift. It gets annoying. Air Intakes increase HP by leaning out the air/fuel ratio. Just do a pannel filter until you upgrade your ECU. About the Air Bypass thing, They sound like they work, but I woudn't trust one to not take in any water. Rich P.S. Any intake with a tube size of 2.5" 2.75" or 3.0" can get a bypass valve spliced into it, from what I read on www.injen.com