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injen and bypass

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Old Feb 11, 2007 | 07:54 PM
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Default injen and bypass

okay so i'm planning on gettin a intake lookin at injen or fugita but i like the bypass on the trd. i know most of you say don't worry about water going up into the motor but i have a friend who owns a 04 civic si with a fugita intake. when he installed it he took off the under guard cuz it was already comming off from bottoming out. now when it rains and he's going so fast his motor sounds sludgish and we looked at the intake and the filter was dripping water. my question is this, how does the bypass thing work and second does injen have a thing like that? i know when i put mine on i'll have a under guard but i part of the filter does get exposed and i dont wanna ruin my motor. Thanks you for replying and advace
Old Feb 11, 2007 | 07:59 PM
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doesn't matter if the filter is dripping wet...

for you to suck enough water to significantly do anything... the filter needs to be submerged underwater.

the bypass works only if the filter is completely submerged too... and injen doesn't have one.

i've run with the faux vent open and driven thru heavy rain... sure the filter's gonna get wet.. but it really won't do anything unless you drive into a 2' puddle..
Old Feb 11, 2007 | 08:05 PM
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okay but why does my friends motor sounds like it's going die out then when we park and rev it to get most of the water out and then it goes back to normal?
Old Feb 11, 2007 | 08:08 PM
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it's cuz it's a different car..
Old Feb 11, 2007 | 08:28 PM
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okay would you suggest the injen or anyone have any other suggestions
Old Feb 11, 2007 | 10:09 PM
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you can get the aem bypass and put it on the injen intake. there are a few topics where people intalled the aem bypass on their injen, and i installed one in my friends injen intake. i have one for sell if you're interested.
Old Feb 11, 2007 | 11:52 PM
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if ur that worried...don't get a CAI, get a SRI instead
Old Feb 12, 2007 | 05:39 AM
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how much are you selling and exactly what are you selling the bypass or the intake?
Old Feb 14, 2007 | 11:55 PM
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The bypass is just another area where fresh air can feed the motor when the lower filter is plugged. The possibilty of feeding enough water through the intake is there. I've only seen it happen and replaced locked up motors because of it, and it doesn't matter what kinda car it is. Water thru the intake is not a good thing.

-I only trust the shortie rams cause I've seen a number of CAI's do what people are scared of.

-just a thought-
Old Feb 15, 2007 | 01:03 PM
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Originally Posted by SquallLHeart
doesn't matter if the filter is dripping wet...

for you to suck enough water to significantly do anything... the filter needs to be submerged underwater.

the bypass works only if the filter is completely submerged too... and injen doesn't have one.

i've run with the faux vent open and driven thru heavy rain... sure the filter's gonna get wet.. but it really won't do anything unless you drive into a 2' puddle..


That is incorrect. The filter does not have to be submerged to suck water in. If the filter is wet and the car is under hard acceleration you can pull water through it. I know this because I've done it. A bypass valve relieves pressure from the filter when it is wet or clogged. It doesn't take much water to destroy an engine.

You can add a bypass valve to any intake system on the market pretty much. We have a combo with an AEM bypass valve and the Injen intake. AEM suggests that you cut part of the intake piping to get a better fit but there have been people who have installed it without cutting anything. It's a real tight fit though.

An air bypass valve is like cheap insurance for your motor. It's up to you if you want it.
Old Feb 16, 2007 | 04:54 PM
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Yes, AEM bypass works on Injen. I'd suggest Injen for a CAI.

If you're really that worried about hydrolocking, there's a solution. I think the bypass is $40ish. Someone correct me if I'm wrong
Old Mar 28, 2007 | 04:05 AM
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What size AEM bypass for the Injen intake, 2.75 or 3.00, thanks!
Old Mar 28, 2007 | 04:40 AM
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I believe it is I can't remember the exact number but the end of the number for the 2.75 is 20-402 and the 3.00 is 20-403. The 20 might actually be another number not sure but I know the end number is correct.
Old Mar 28, 2007 | 04:03 PM
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Whittier CA? Dude, we don't get enough rain all year for it to be worth it. For what it is worth I had the injen cai with no problems and I would venture to say that is the norm for socal tC owners with cai. (I bought a 350z so the cai is for sale by the way.)
Old Mar 28, 2007 | 09:46 PM
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i had the aem cai on my old car and lived in northern cali for over a year and if you remember all the flooding they had in 05 i was there and never had a problem with my cai just dont submerge and your good
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