Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

AEM bypass Valve... yes or no??

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Old Mar 2, 2009 | 02:24 PM
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dj theoretic's Avatar
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Icon2 AEM bypass Valve... yes or no??

ok so this is the story, I decided to install my Cold Air Intake and along with the bypass Valve yesterday just because, well I get out of class today and it starts F***n raining !!!!! Out of luck !!


so my question is... Is it safe to by driving while it's raining using a By Pass Valve or should I throw back the short ram Intake ?????? seems like it will be raining on and off this whole week... more things to worry about !!! ahhhhh...
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Old Mar 2, 2009 | 02:47 PM
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Default Re: AEM bypass Valve... yes or no??

My car used to bog when it was rainy because water would get all over my filter. But don't get the bypass valve unless you've actually experienced bogging because the bypass valve doesn't look as good as without it.
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Old Mar 2, 2009 | 02:50 PM
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Default Re: AEM bypass Valve... yes or no??

The bypass filter is used for when it starts raining? If your filter gets submerged below water then your bypass filter sucks in air for your engine so it does not hydro lock.
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Old Mar 2, 2009 | 02:51 PM
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Default Re: AEM bypass Valve... yes or no??

I'm pretty sure the bypass valve doesn't protect against simple rain. I think it only helps if your filter is completely under water. I have one and when my filter gets wet i still notice a little bogging.
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Old Mar 2, 2009 | 02:55 PM
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Default Re: AEM bypass Valve... yes or no??

CooL , the reason why I installed the Cold Air Intake was to see if I would notice any HP gains using a 3 inch in diameter short ram intake and customizing it with the extended lower part of my AEM CAI going down the engine bay. The piping on the AEM is about 2.50 tp 2.75 inches in diameter I believe.


the good news is that the CAI did respond really well with my mods.
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Old Mar 2, 2009 | 02:58 PM
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Default Re: AEM bypass Valve... yes or no??

Your best bet would be to just run the ram air for the week. Thats what I do in the winter.
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Old Mar 2, 2009 | 03:04 PM
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Default Re: AEM bypass Valve... yes or no??

yeah true that, I think ill just do that.

Out with the old in with the new, now back with the old again, for now !
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Old Mar 2, 2009 | 03:11 PM
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Default Re: AEM bypass Valve... yes or no??

Originally Posted by Willby24
I'm pretty sure the bypass valve doesn't protect against simple rain.
Ah I didn't even think about that, nice.
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Old Mar 2, 2009 | 03:12 PM
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Default Re: AEM bypass Valve... yes or no??

There's nothing wrong with a bit of water entering the intake tract. You'll be perfectly fine running the CAI without the bypass valve, assuming you don't drive through standing water that's deeper than 12" or so. The bypass valves are more trouble than they're worth, and I've read of them coming apart and being sucked into the engine on more than one occasion. If you want to stick with the CAI, leave it without the valve. Otherwise, I'd recommend going with an enclosed air box that draws cool air, like the Comptech Icebox or Mugen intake.
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Old Mar 2, 2009 | 03:17 PM
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Default Re: AEM bypass Valve... yes or no??

ill see to it ! then. thanks for the info... anyone else ? what's your opinions ?
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