What will a Bypass Valve do on a CAI and does it really work???
#1
What will a Bypass Valve do on a CAI and does it really work???
Will i was searching on ebay for my CAI pipes, i came across a few adds such as this one
http://cgi.ebay.com/ebaymotors/AEM-C...QQcmdZViewItem
they claim to prevent water from going into your engine and prevent hydrolocks.... anybody have any idea if this really works??
http://cgi.ebay.com/ebaymotors/AEM-C...QQcmdZViewItem
they claim to prevent water from going into your engine and prevent hydrolocks.... anybody have any idea if this really works??
Last edited by RevUp13b; 11-19-05 at 07:32 PM.
#2
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From what I've seen they do work, BUT you only need one of those if you're foolish enough to mount your intake low enough that it could actually be submerged in a deep puddle and you're stupid enough to drive though that puddle. Save yourself some money and don't do either of those things.
#3
It also pretty much kills whatever gains you get from your intake. It WILL save you from hydrolock though.
Yes, it is stupid to drive through a deep puddle with your intake in the fender, but sometimes there's a sudden downpour or broken hydrant or something and you can't help but drive through it. If you have a CAI and your filter's behind the fender, it would be smart to get one. Especially if it rains a lot in your town.
Yes, it is stupid to drive through a deep puddle with your intake in the fender, but sometimes there's a sudden downpour or broken hydrant or something and you can't help but drive through it. If you have a CAI and your filter's behind the fender, it would be smart to get one. Especially if it rains a lot in your town.
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it is a safty measure and they do work
the whole idea with a cold air intake is to draw air as close as possable from the ground.(hot air rises) and i dont think you have to be stupid to drive through a puddle, it happens.
i would recommend one
i dont think you will loose any gains that are even noticable, if any at all
the whole idea with a cold air intake is to draw air as close as possable from the ground.(hot air rises) and i dont think you have to be stupid to drive through a puddle, it happens.
i would recommend one
i dont think you will loose any gains that are even noticable, if any at all
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#8
well... if it's what I think it is... when the water gets sucked up it's heavier than normal air which requires alot of negative pressure to suck up... soooo... the by pass opens up thanks to the higher than normal pressure... and alows air into the intake (kinda the opposite of a blowoff valve) definantly put it before the maf so that the air gets metered... otherwise you'll run lean... and lean = boom.
#9
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Originally Posted by Natey
It also pretty much kills whatever gains you get from your intake.
Originally Posted by turbine
the whole idea with a cold air intake is to draw air as close as possable from the ground.(hot air rises)...
...and i dont think you have to be stupid to drive through a puddle, it happens.
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A small amount of water won't harm piston or rotary engines, but you still shouldn't put the filter where it can get wet, because the water blocks airflow.
Last edited by NZConvertible; 11-20-05 at 05:39 AM.
#14
i'm not sure, but it is possible this by-pass valve is merely another filter, if it is mounted in the engine bay it would be taking in hot air. but it could be a tightly woven filter, that way it doesn't really take in air unless the vacuum becomes great (if your entire filter in the fender/bumper is completely submerged). remember water doesn't flow up hill, think about trying to suck some drink from a cup without the straw being all the way down in the drink, it should be the same principle. and just food for thought, it looks as if it could easily affect the flow into the intake, that could reverse the gains if it is a negative affect on the flow.
jumbogum sounds right.
jumbogum sounds right.
Last edited by therotaryrocket; 11-20-05 at 08:52 AM.
#15
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Originally Posted by therotaryrocket
i'm not sure, but it is possible this by-pass valve is merely another filter...
http://www.sportcompactcarweb.com/tech/0104scc_tested/
This proves how well they work, but it still doesn't change the fact that they're only there to protect people from their own stupidity...
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its called a valve for a reason. it is a rubber/foam diaphragm that only opens under a certain level of vacuum. its tight enought so that theres no chance of the diaphragm opening if the filter isn't clogged.
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wow aem made a great idea! so then its worth it! as a precuation but u kinda shouldnt submerge ur car unless u live in luisiana.....then there was no choice..
#18
It provides additional restriction by not being a smooth piece of aluminum piping.
To be honest, I can't say that it will kill the gains on a rotary engine, but on a Protege with a 2.0 in it, yes, it definately kills any gains you get from the cai. There was a huge thread about this subject on the Protege boards, and someone ended up dynoing their car and posting the results.
To be honest, I can't say that it will kill the gains on a rotary engine, but on a Protege with a 2.0 in it, yes, it definately kills any gains you get from the cai. There was a huge thread about this subject on the Protege boards, and someone ended up dynoing their car and posting the results.
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Repost.
This is a thread from a while back. Just a few more thoughts...
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/cai-question-466506/
![Stick Out Tongue](https://www.rx7club.com/images/smilies/tongue.gif)
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/cai-question-466506/
#20
why not just drill and tap your intake tube with a one way valve that opens at, say 5 psi, and then put a breather filter on that. that way, if the filter become submerged, it will be easier for the air to go in through the breather filter. same idea, much less expensive.
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