cold air bypass valve?

[anthony90si]

what does this do and how does it affect peformance
thnaks

[TheSilentChamber]

it keeps water from getting into your motor in the event that your filter becomes submerged in water. Some people say they work others say they dont. I seen a demo of AEMs where they completely submurged the filter in water while the engine was running and it did not suck any water up.

[anthony90si]

oh i c thanks!!!

[91civichatch2571]

yea, i saw a test (in a magazine though) of an nsx going up to like 7000rpm or something with the filter submerged. It worked.

[]{iwi]

i would not drive my civic in water that would go over the bottom of the doors so i dont think i really need 1 myself for water to be sucked up the intake tube the whole end of the tube would have to be submerged in the water and stay under the water tell the water reached the motor even partly submerged the water would not be sucked up or at least not enuf to do any damage ill find something better to spend my money on

[Hilikus Funkin]

arent they only like $15? I think JC whitney sells them.

[TheSilentChamber]

the AEM ones are about $40 I think

[Hilikus Funkin]

damn thats expensive as hell

[Kven]

Originally Posted by ]{iwi

i would not drive my civic in water that would go over the bottom of the doors so i dont think i really need 1 myself for water to be sucked up the intake tube the whole end of the tube would have to be submerged in the water and stay under the water tell the water reached the motor even partly submerged the water would not be sucked up or at least not enuf to do any damage ill find something better to spend my money on

well most people dont actually drive in water; the water enters from splashed water, rain in mid air(falling)(like if you have your filter sticking out in the front) or from water coming off the tires.

[Ones&zeros]

Originally Posted by anthony90si

what does this do and how does it affect peformance
thnaks

it may not affect performance, but it might be usefule in the winter because of the snow.

[TheSilentChamber]

I could make money if it snowed here, use my front bumper as a snow plow. kinda looks like one.

[SiZ]

Originally Posted by Kven

well most people dont actually drive in water; the water enters from splashed water, rain in mid air(falling)(like if you have your filter sticking out in the front) or from water coming off the tires.

No. When your filter gets splashed with water it will be fine. Air is eaiser to suck up than water, so if a little gets spalshed on the filter say covering 40% of it, air will just suck through the other 60% of the filter that is free of obstruction. The only time you run into a problem is if your filter is completley submerged and the only thing left for your intake to suck up is water. Thats where the air by-pass valve comes into play becuase it creates a second area for the TB to suck air from thats easier than pulling water up the tube.

If I remember correctly (even though the article was a long time ago), there was still some water sucked into the actual intake with the bypass valve, but since there was air comming in from a higher point in the tube, the water never made it past the bypass valve.

I think if you have a CAI, I don't see why you wouldn't pay the extra little amount of money for the security. Even though the odds of actually sucking up water are quite slim.

[Kven]

if thats so, my friend who has a cai on a eg civic, his engine looses a little power when he splashes through a puddle. also its not 40% is more like 90% covered with water. it really depends on what filter you use though. he has the one with sort of a wire mesh on the end; but paper element around it.

[turtlecrxsi]

Yes, they work! How do I know this? That's funny... anyway, yeah, they work. The problem is they're expensive and cheaply made. When I had my tranny/clutch work done (the first time), the bypass came apart, but the mech was nice and used sheetmetal screws to fasten it together and now it's stronger than when I bought it. Sometimes you just can't help what nature is going to do, water puddles or storms can get deep and if you have a CAI you'd regret not having one if your engine hydrolocks.

[SiZ]

Originally Posted by Kven

if thats so, my friend who has a cai on a eg civic, his engine looses a little power when he splashes through a puddle. also its not 40% is more like 90% covered with water. it really depends on what filter you use though. he has the one with sort of a wire mesh on the end; but paper element around it.

The loss in power could be attributed to the fact that its getting considerably less air than normal, but its not because its taking in any water.. If he did, his engine would be done.