Bypass Valve Fitment?

[ChrisJ]

Hey everybody, this is my first post here. I have a question regarding the fitment of the AEM bypass valve with the Injen CAI (Yes, I have done a search).

I know everyone says just to replace the second hose with the vavle (in front of the MAF), but it doesn't seem to fit over the flanged pipe. Is my Injen pipe slightly different from everybody elses (this is what mine looks like), or am I doing something wrong?

I have the 2.75" bypsas, do I maybe need the 3" bypass?

Anyone who's installed the bypass on their injen, pleae help. Thanks in advance.

 

[derrick1623]

i dont recall my injen having that lip on it...the silicon sleeve was hard enough to get on.

 

[ChrisJ]

i dont recall my injen having that lip on it...the silicon sleeve was hard enough to get on.

YES! That's exactly what I was thinking. I had a hell of a time getting the sleeve on myself. Does anyone else have this lip on their pipe, or am I the only one??

I might have to contact Injen and ask them what's up.

 

[jali-p5]

my intakes didn't have the lip that yours seems to have on it. how does the bypass valve fit onto the pipe cause when i put the MAF/MAS and the intake together using the rubber sleeve, both parts touched.....did i push it in too far? based on that, won't the bypass valve be blocked by the two parts touching?

 

[MP5Raycer]

CAI problem

well here use mine as a guide .. also i am a little lost what is the by-pass good for on a non turbo car .. what does it do .. ( i feel stupid) i know a blow off valve is for a turbo but let me know

 

[derrick1623]

raycer...it's to keep water from being sucked into the throttle body.

 

[MP5Raycer]

ooohhhhhh

its that littl faom donut lookin thing right ???

 

[derrick1623]

its that littl faom donut lookin thing right ???

yessir

 

[ChrisJ]

I just got an e-mail back from injen, they told me they added the lip to all their new intakes to help prevent the sleeve from slipping off. If I want to use the bypass vavle, it looks like I will have to cut the lip off. Oh well, I was hopinng I wouuldn't have to cut.

 

[Equinox]

 

[YellowPR5]

EQUINOX, I don't think it is too important, but you have your By-Pass Valve on the opposite side then everyone else. If the By-Pass valve does need to work, the air won't be going through the MAF and will cause your computer to freek out. Like I said though, how often is the by-pass valve actually active to make a difference.

 

[ChrisJ]

It would be easy to add it to either side of the MAF sensor, if it weren't for that lip. Unfortunately, both pipes have it.

I'm going to cut the lip off before the MAF sensor and put the valve there. The AEM instructions tell you not to put it behind a MAF sensor.

 

[Sir Nuke]

EQUINOX, I don't think it is too important, but you have your By-Pass Valve on the opposite side then everyone else. If the By-Pass valve does need to work, the air won't be going through the MAF and will cause your computer to freek out. Like I said though, how often is the by-pass valve actually active to make a difference.

YellowPR5, this may be true...BUT, and we have had this discussion MANY times......AEM's recommends that you put the bypass valve as close to the throttle body as possible...don't ask me why...but that is what they say....Personally I would think you would want to keep the possiblility of water in the intake as FAR as possible AWAY from your throttle body.....go figure.

 

[MP5Raycer]

bypass

well from my own opinion .. i have had three cars with CAI and never used a bypass valve ..and also our vehicals are completely protecting ther CAI filter with that black plastic schroud that is connected underneath the bumper ... and also think of this we all know that that pipe gets super hot .. and 99% of the time any moisture that enters through the filter is completely evaporated before it hits the manifold and if you are taking in enough water to go through the filter and the pipe then the bypass then the MAS to your manifold .. you probably should not be driving a car with a CAI .. because I dont know about you all but whenit rains I barely drive my ride .. but when i do i am watching for every and any large puddle and i make damn sure i dont plow through it ... and also the filter is in front of the tire so the the only way to really get enough water to damage anything .. is to submerge the front end and then rev the engine but hey its only my 2 cents about it

 

[blynzoo]

You want the bypass as close to the throttle body as possible so that water can travel up more of the pipe. The bypass DOESNT drain water, it opens up and takes in air from the engine compartment when the vacuum becomes too great (i.e. when you're sucking up a puddle). It does nothing under normal driving conditions, including when you take little droplets into the filter. It's only for complete submersion. And you can't rev above approx. 2k with the bypass on, or water will be sucked up anyway. And once the bypass opens, you only have a few seconds (if that) to kill the motor. The bypass valve releases only some of the vacuum pressure, you're still pulling in water (more slowly) through the filter. Having a CAI in a rainy area is a risk, but then so is cruising at 80mph on the highway D ). If you keep the revs very low, it is possible to pull air only through the bypass valve and not through the filter, but GOD, who would want to take that risk!
happy hunting

 

[blynzoo]

put it past the Mass airflow sensor. better to replace that than a motor.

 

[PR5hokie]

Check out

http://www.sportcompactcarweb.com/tech/0104scc_tested/

for a good test regarding the AEM by pass valve. According to the test it worked with high RPM's and it worked while continuing to throttle your engine. I think if you read it will clear up a lot of confusion. Granted the car they are using isn't a Protege but I have a feeling the car they used builds more suction than ours. About the placement of the valve I'm confused after reading this thread. I haven't installed mine yet but in the instructions AEM stated they wanted it before the MAF. It seems however that we have a contradicting remark when Sir Nuke stated that AEM recommended it be close to the throttle body. I guess I'll have to pull out the instructions when I get home to get the exact wording. I just want to figure out a way for all of us to stop talking in circles and to give ChrisJ (thread starter) a straight answer.

Matt

 

[Sir Nuke]

the information I stated in my earlier post came from a previous discussion on this very subject......the information came from another person on the board who cut and pasted some information FROM or supposedly from AEM....

Personally, I am running an Injen CIA...and I do NOT have a bypass valve.

 

[MP5Raycer]

CAI

Same Here Sir Nuke ... we dont need no stinking by pass valve . hehe (moon) (piss)

 

[PR5hokie]

Sir Nuke I meant no offense by what I wrote. After reading it back just now it may of sounded a bit offensive. I personally started getting a bit confused myself and wanted to get to some level of clarity. I as well am running with an Injen and most likely won't even install the bypass valve. (doh)

Matt