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I wanted to get a bypass valve since its raining like crazy here... just wondering what size i have to get. I have a cold air AEM intake. thanks

 
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"20-401" That is the one you need. It says so right on the AEM website.

 
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Just to let you know it doesnt matter if it rains like crazy. The only way the intake will take up water is if the filter is sumberged under water and you hit the gas pedal. Yea, it would be more safe if you got the bypass valve but its really not needed. I have it but its all good.

 
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Just to let you know........Where I come from.....Charleston, SC. Our city is at sea level so anytime it rains we get mad flooding. I personally have seen 3 engines saved by the bypass valve. Every week there is another car in the shop getting a new engine because they didn't have the bypass valve in and hydrolocked their engines.

If you live up in the mountains or somewhere with no flooding then NO, the bypass valve is not needed. But for us lowland area people it is vital to our car's servival.

 
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I live in So Cal where it has been raining like crazy for the last couple days. Well yesterday I called AEM and talked to one of the techs there and he said not to worry about the rain because you would have to submerge the filter in order to do any damage and even after it's in the water you would have to be really hitting the gas because water is very heavy and hard to get up the pipe. Thats what he told me.

 
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Thanks for the info. I feel a lot safer about getting the V2 now.

 
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so what happens when it floods???

 
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LOL

So they basically told you that their $40 bypass valve is useless??

 
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I went through a major puddle the other day with my CAI. I was doing about 25mph and the water splashed up so high waves hit the windows. I was worried about my CAI and I poped the hood when I got to my garage. The filter seemed to be soaking wet, but I couldn't find any damage. That was a few days ago and I haven't noticed any difference in my car. If the filter has to be submerged for hdrolock to happen, then I beleive you'd also have flood damage on the floors.

 
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I got a bypass valve on mine.. this crazy midwest snow and crap... i figure its best to have it.. just that little added comfort..

 
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No, there not saying the bypass valve is useless. if you want to be safe than get it. Its in the event that your filter is submerged in harsh conditions lets say.

 
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Get it just to be on the safe side. Aem has proven that it works....

 
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I'd have to be in water up to the windows to get any in my FIPK. [IMG]i/expressions/laugh2.gif[/IMG]

 
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hey, i heard that the V2 doesnt have a bypass valve, i really would like the V2 but im not sure, i live in the cincinnati area and i dont know what i should do. i also heard that the bypass valve takes away horsepower...is that tru, cause screw it if it is, its just something i heard.

 
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i will alwyas get one. nuf said.

 
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no it takes nothing from HP, its a good safety thing to have and its only 40 bucks, in the scheme of things when your buying a 250 V2 you might as well spend the extra 40 to invest in the safety of your car whether or not it happens at least you know. And the Bypass valve isnt produced ON the intake you have to cut the piping and fit it on, if they dont have the correct sizee out yet they will.

 
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thats cool, but from past posts i read that someone called a representative at AEM and they said there would be no bypass valve for the V2 because that would eliminate the technology of what it does, i dont know, once again something i heard, if there is a bypass valve for the V2 i will wait, if not, im going with the original, i wont be able to drive in the rain without worrying

 
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Just wondering if anyone knows how often you need to change them. I've had mine on for 2 years now and through 2 winters. The sponge part seems to be getting quite dry.