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Old November 8th, 2004, 06:45 PM  
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By-pass valve for CAI

I'm interested in getting a CAI for my car but I live in Florida and, even worse, my school is in a flood zone. I know a By-pass valve would prevent hydro-locking if my intake was to get fully submerged in water, but I've heard that it kills much of the hp/tq gains a CAI offers. I've even heard that AEM states that a by-pass valve negates ALL gains in the V2! Is this true? Would I just be better off going with a Short Ram instead?

Or maybe someone can just explain to me how a by-pass valve works. That way I can just make sense of it.

Thanks in advance

Last edited by i4performance; November 8th, 2004 at 06:47 PM..
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Old November 8th, 2004, 08:04 PM  
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yes on by-pass value negates some gains (if not all) on v2..
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Old November 9th, 2004, 06:47 AM  
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just learn not to drive in the rain but you could always put a dunkin donuts box around ur intake
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Old November 9th, 2004, 08:06 AM  
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Quote:
Originally Posted by jiggerman78
just learn not to drive in the rain but you could always put a dunkin donuts box around ur intake
lol and how exactly do you learn not to drive in the rain? Living in Florida, that's near impossible I think I'm just going to go with a Short Ram. I've heard it sounds more agressive than a CAI and the difference in gains is very little and even unnoticable. Now to decide: AEM or Injen?
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Old November 9th, 2004, 08:45 AM  
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I'm in Florida too, and I have no reservations about having the Injen CAI on my car. And I've driven thru plenty of healthy puddles, and never had any inkling of any kind of a problem. My $0.02 .
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Old November 9th, 2004, 08:50 AM  
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Q for 6mt-ers who've added a CAI: How much further does the aftermarket CAI extend down compared to the stock tube? I can't imagine that Honda would release a factory part that would be remotely in danger of hydrolock.
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Old November 9th, 2004, 10:39 AM  
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K&N can be converted to short ram in rainy season. Will put mine on sometime today.
Rick
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Old November 9th, 2004, 02:04 PM  
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Quote:
Originally Posted by DangerMouse
Q for 6mt-ers who've added a CAI: How much further does the aftermarket CAI extend down compared to the stock tube? I can't imagine that Honda would release a factory part that would be remotely in danger of hydrolock.
A from 5at'er - The 6-speeds and the autos pull the incoming air from about the same place, that being in front of the battery. It's just that the 6-speeds don't have that large resonator box down in front of the wheel, like the auto's do. But the actual air inlet is still under that triangular-shaped plastic cover that is in front of the battery.
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Old November 9th, 2004, 02:24 PM  
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ok, so is the intake significantly lower on an aftermarket CAI than that plastic cover under the battery?

I guess I'm just trying to gauge how much of an issue a deep puddle would be. I too live in a flood plain (the gorgeous swamp called Houston) and was thinking about getting the bypass valve, but not if it takes away the power.
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Old November 9th, 2004, 02:29 PM  
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if you are seriously considering a bypass, just get a short ram - its pointless to have a CAI with bypass
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Old November 9th, 2004, 02:38 PM  
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oh cmon, ive been told forever that a bypass valve doesnt affect ure gains, now i hear that it kills it?? how??? arg!
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Old November 9th, 2004, 02:39 PM  
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Quote:
Originally Posted by 03LXV6Guy
I'm in Florida too, and I have no reservations about having the Injen CAI on my car. And I've driven thru plenty of healthy puddles, and never had any inkling of any kind of a problem. My $0.02 .
Just because you haven't experienced it, it doesn't mean it won't (or can't) happen. I've heard so many horror stories about hydro-locking (especially down here). To me, 3 hp to the wheels isn't worth the risk of totalling a $25000 car
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Old November 9th, 2004, 02:42 PM  
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i've only heard negative things about the bypass (except that it performs its job - avoiding hydrolock)
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Old November 9th, 2004, 02:44 PM  
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Quote:
Originally Posted by DangerMouse
ok, so is the intake significantly lower on an aftermarket CAI than that plastic cover under the battery?

I guess I'm just trying to gauge how much of an issue a deep puddle would be. I too live in a flood plain (the gorgeous swamp called Houston) and was thinking about getting the bypass valve, but not if it takes away the power.
Yes, the intake is a lot lower than stock. But I don't believe that it would be a problem. We get some heavy rainstorms here also, and I've driven thru a lot of standing water, and I don't have any problem with it.

The bottom of my Injen filter is about 9" or so above the ground, with the top of the filter being about 17" above the ground. Those dimensions are approximate..... just some quicky measurements. But, in order to hydrolock, the filter has to be basically completely submerged and you have to have the throttle open. So that means the puddle (more like a small lake) would have to be in the order of a foot and a half or so deep. It's not likely you drive thru water that deep. A 6" deep puddle wouldn't even get the filter wet probably.

And yes, from all I've read, the bypass negates a lot (or all) of the gains you'd get from the cai. Plus, some people have had problems with them. And I second what smolderingwreck had to say.
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Old November 9th, 2004, 02:45 PM  
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I wish the injen was sometimes a 2 piece so I could put my filter in the engine bay if I wanted too. It was nice like that on my old car and I was way more comfortable driving it in the rain!
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Old November 9th, 2004, 02:52 PM  
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Quote:
Originally Posted by i4performance
Just because you haven't experienced it, it doesn't mean it won't (or can't) happen. I've heard so many horror stories about hydro-locking (especially down here). To me, 3 hp to the wheels isn't worth the risk of totalling a $25000 car
Never said it can't or won't happen...... I just don't believe it is as much of a factor as some believe. And, personally, I've never known anyone that has actually hydrolocked a motor. But that's just me.

Imo, if one hydrolocks their motor, then they were driving where they weren't supposed to, and they were under throttle....... one no-no on top of another.

And, I don't think a blown motor would qualify the car as being totalled..... don't know for sure though.
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Old November 9th, 2004, 02:55 PM  
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Originally Posted by Sick6speed
I wish the injen was sometimes a 2 piece so I could put my filter in the engine bay if I wanted too.
Cut it, buy a coupling and a filter, and then you'd have an intake that was convertible.
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Old November 9th, 2004, 03:19 PM  
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Quote:
Originally Posted by 03LXV6Guy
Cut it, buy a coupling and a filter, and then you'd have an intake that was convertible.
Yeah I know, but nobody wants to cut the nice 1 piece design,
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Old November 9th, 2004, 03:22 PM  
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Yea, I don't blame you.
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