proto5handler

What is the right size bypass valve that i need to get for the Injen CAI that fits PR5 2.0L motor. Thanks.

Sir Nuke

you don't NEED a bypass valve at all.......

proto5handler

I thought the bypass valve prevents water from entering the engine if i have a CAI. Prevent hydrolock.

http://www.adventon.com/acb/Category...ID=24&CATID=81

NOTE: Description of bypass valve

gcs118

It does prevent hydrolock if the filter is totally submerged. I've heard it takes a foot or so of water to drive through until the bypass valve actually works. It also takes away any performance gains. I would recommend either the simple Injen splash guard or nothing at all.

proto5handler

Alright, im just trying to figure out if i even need to worry about hydrolock. My car isnt lowered or anything. Ive just been hearing and reading about this and trying to figure out what i should get. I definately want to get CAI. This splash guard you speak off, where can i get it? Will it do the work in normal rainy conditions and does it take away from performance gains. Thanks. Sorry if these questions seem simple, im just trying to familiarize my self with everything. Thanks again.

Scarmiglio

Here you go:

http://www.planetperformance.com/pro...79157&option=1

However, the shield really isn't worth it. Think of how far the water would have to travel to get to your intake manifold. Water splashing up off the road is not going to make it. Besides, the filter sits behind your bumper (fog light) and has protection from the element on almost all sides (including directly below). If you're really worried about it, buy the AEM instead and save more than $100. The AEM places the filter away from the engine also, it just isn't quite as low as the Injen so it's more protected from the water.

We sell the AEM kit for around $150. Here's the link:

http://www.planetperformance.com/pro...G%C95&sf4=2.0L

Mach 1

Nothing personal, I just cant believe the hype with the bypass valves. Who here is going to submerge thier car in water? And if they did, what is this stupid valve going to do to provide your car with air and prevent motor damage? Does it close up and prevent water from locking up your engine?

Amazing what marketing and advertising can cause uninformed people to buy.

A bypass valve for a cold air intake to prevent hydrolock...lmao.

I would never even attempt to sell such an item on the basis that the general public isnt even that stupid to buy one.

But i guess thats why Im not a business man..

later

UCSBgeek

I remember reading a thread on this board about somebody who did submerge their car and had it hydrolocked. Pretty sure it was on this board at least...

Check it out.. though it looks like a flame war

http://www.protegeclub.com/forum/sho...ht=hydrolocked

Mach 1

Interesting thread.

Ok, lets look at this another way. It is extremely rare for a person to hydrlock thier engine while driving on the roads (and not ditches and streams).

It can happen, but not often. Now, in the extremely rare event that it does happen, how is a $45 piece of plastic stuffed into your intake going to make a difference?

And is it worth $45 for this "protection" that you will more than likely never need and probably wouldnt work anyway?

Mach 1

I found this description of the by pass valve:

AEM’s Air Bypass valve for Cold Air Induction Systems virtually eliminates the unlikely chance of water ingestion should the filter element become wet from deep puddles, rain, hail, sleet or snow–or any other scenario in which the filter element could encounter or become submerged in water. The valve installs along the upper portion of the inlet pipe on the same axis as the throttle body centerline. Should a drop in pressure occur within the pipe due to filter submersion, the valve shuts down induction at the filter and routes incoming air through its external orifices, eliminating any chance of water ingestion.
AEM’s Air Bypass Valve is for use on AEM Cold Air Systems only.

Note: Cutting a portion of the intake is necessary to install the By-Pass Valve.

Well, first off you can eliminate rain,hail, sleet or snow...the only concern is submerged or deep puddles.

And can someone please explain to me exactly how this thing will do this : "the valve shuts down induction at the filter and routes incoming air through its external orifices, eliminating any chance of water ingestion. "

If it shuts out the water, why does it need to route incoming air anywhere other than the engine?

gcs118

I have my Injen CAI here not installed yet. But on the directions, it says you can remove the cold air extension if the weather is bad. So you woukdn't need to get the extra protection, you can just take off the extension if it's really bad out.

4 rubBeR

...can't see most people here doing that every time the weather is threatening...but at least you would have the option...

Sir Nuke

YES, someone of this board did hydrolock their engine.....its a friend of mine....but you know HOW he did it?

he made the BAD CHOICE to follow someone else into DEEP water.....figured as long as the car in front of him kept moving it would PUSH the water away from his car, they guess what? the car in front of him stopped.....HE tried to avoid the water by heading for the high ground in the middle of the road.....but there were cars coming from the OTHER direction....it sent a wave of water OVER HIS HOOD!! and the water was as deep as his headlights.....NOW...do you REALLY think that a bypass valve would have helped you there? NO....because ANY aftermarket intake would have been totally under water...INCLUDING THE BYPASS!

NOW....do you think that INJEN could make some money selling bypasses if THEY told you that they MIGHT be needed for their system and then they made them too? I think so......but do that? NO they don't.....and there is a reason for that.....for if you drive responsibly...and do not abuse your car by driving through DEEP standing water.....its totally unnecessary.....and a waste of your money.

shackmgr6073

I feel bad for Pro5handler. Now he knows how most of us "uniformed" people feel. I am sorry I do not work on cars for a living. That is my fault. I am also sorry that I am fairly new at doing mods on these newer cars, also my fault. This is why I rarely post here. I like this site for its information and for the people in it (most people anyway). I apologize for all of us who have never done certain projects with our cars before. I would like to spend more time doing it but working 70 hours a week doesn't afford much time. I will from now on just PM someone I know I can get a straightforward answer from. This way I do not run the risk of someone calling me stupid over the internet, someone I have never met. I again apologize if this post doesn't live up to the standards of some.

Mach 1

Oh give me a greak. I said "Nothing personal" before I started my rant about the bypass valve.

But since you want to play, what would you call buying a piece of junk thats overpriced and worthless for your car? Intelligent?

Notice he didnt inquire as to opinions on the bypass valve, but to which size he needed. He had already decided to spend the money on it, so you must assume he thinks it works and he needs it, right?

Im just saying people with limited knowledge on how cars work need to stay away from all the junk being sold out there.

Just trying to save you some money.