Air Intake Questions!!?? - Honda Prelude Forum

thebmxican · 10-30-2008, 01:11 PM

i have a AEM cold air intake and it is the longer one that comes out of the bottom of the car infront of the front wheel. WHen it rains it gets wet and sometimes dirty. is this bad to have and should i move it into the engine? I am concerned with the winter and all the water on the roads??
PLEASE HELP!

Solid · 10-30-2008, 01:22 PM

Yes, sucking water into the engine is bad.

jdm97ludegirl · 10-30-2008, 01:34 PM

You should get an air bypass valve to put on it. That will catch the water before it goes into your engine.
Only bad part is that you have to cut your intake to install it.
But this way you can keep it on all the time and not worry about getting water in the engine.

jdm97ludegirl · 10-30-2008, 01:36 PM

If you cut it up toward the top of the air intake, you can take off the bottom part of the intake when you have a lot of snow and have a temporary short ram, move your filter up.

Tee-Dot · 10-30-2008, 01:38 PM

I had an AEM cai on my Prelude for over four years. I cleaned the filter a few times, but never EVER had any water issues.

Any water deep enough for your filter to get into is too deep for any car anyway.....

jdm97ludegirl · 10-30-2008, 01:47 PM

If you drive through a puddle and it splashes though that can do enough damage to hurt!

prepreludesh · 10-30-2008, 01:58 PM

No it wont?

Tee-Dot · 10-30-2008, 02:05 PM

Quote:

Originally Posted by jdm97ludegirl

If you drive through a puddle and it splashes though that can do enough damage to hurt!

No...

Water will be stopped by the plastic fender well before it ever gets close to the filter. Plus, a few drops of water in a cylinder aren't going to do any damage. You have to travel through standing water and actually submerge the filter before it can cause damage.

DaytonaPrelude · 10-30-2008, 02:45 PM

See if you can suck up some water without completely submerging the straw.. you can't, unless it is totally submerged there just isn't enough suction to pull a little bit of water into your motor. If the filter is WET it may restrict the flow of air into the motor.. but that is it.

If a little bit of water was too big of a problem then the moisture in the air would be enough, or even condensation could cause a problem.. you can have water going into your combustion chamber from a blown head gasket, and it will just come out the exhaust(unless it is a LOT of water).. and that is more than you would get from running through a puddle.

Solid · 10-30-2008, 03:16 PM

Everyone's engine is running on some small amount of water. Due to it being in the gas tank, plus everyone's exhaust contains water vapor.

If you will drive with the nose submerged you would want a bypass, but in that case you would probably we submerged enough for the water to be at the bypass.

You can a CAI if you don't submarine the car. You can run a bypass if you want to cancel the benefits of the CAI.

Otherwise OEM, Ram/V2s, and the Type S are fine.

thebmxican · 10-31-2008, 09:13 AM

Thanks for the info.

i was thinking i would just cut the air intake and have the filter just set right above the whole to the bottom so that way it is getting a little more air than just stiing in the engine.

Could this work?

spin_r_g · 10-31-2008, 10:17 AM

Quote:

Originally Posted by thebmxican

Thanks for the info.

i was thinking i would just cut the air intake and have the filter just set right above the whole to the bottom so that way it is getting a little more air than just stiing in the engine.

Could this work?

Doing that is just throwing money down the drain and wasting your time. Essentially what you'll have is a short ram. So why even bother buying a cai.

thebmxican · 10-31-2008, 12:48 PM

yeah but it was already on the car when i got it so i mean i wouldnt be loosing any money

rpwolf · 10-31-2008, 03:45 PM

Ive heard of failures with those air bypass systems. keep it as is and be aware of where you drive. clean it everynow and then too.

If you decide to cut it, i would make it so the filter is atleast right below the hole. CAI>short ram.

Semper_Fortis59 · 12-11-2008, 12:39 PM

Damn man, I just ran through some mean puddles today.....and the worst of my fears come true.....

AEM Cold Air Intake in hawaii during super heavy rain = water sucked in and 5 hours of fone calls to tow companies and insurance operaters.

anyone know if its possible to still save my prelude?????

i just hope the block isnt frozen so bad that i cant drive mine anymore =(

DaytonaPrelude · 12-11-2008, 03:27 PM

I will once again say that an AEM air bypass valve cannot fail, and it does NOT reduce the amount of power gains either. It has rubber flaps that stay sealed until the filter is submerged till it would be sucking water, then the rubber flaps open.

My friend just tested his just like a website I found online did, and he got the same results. All those guys who say that an AEM air bypass valve will reduce power gains.. knows nothing about the AEM bypass valve. They just like to talk as if they know everything.

Better safe than sorry, and it sucks that Semper_Fortis59 has to be the proof of it. Just because some of these old school(or wannabe know-it-all) luders say that ALL air bypass valves make a CAI pointless... doesn't make it true. A well constructed one like the one AEM makes is the way to go.

Look at that picture and tell me how THAT bypass valve would reduce power.

Tee-Dot · 12-11-2008, 03:36 PM

Quote:

Originally Posted by DaytonaPrelude

I will once again say that an AEM air bypass valve cannot fail, and it does NOT reduce the amount of power gains either. It has rubber flaps that stay sealed until the filter is submerged till it would be sucking water, then the rubber flaps open.

My friend just tested his just like a website I found online did, and he got the same results. All those guys who say that an AEM air bypass valve will reduce power gains.. knows nothing about the AEM bypass valve. They just like to talk as if they know everything.

Better safe than sorry, and it sucks that Semper_Fortis59 has to be the proof of it. Just because some of these old school(or wannabe know-it-all) luders say that ALL air bypass valves make a CAI pointless... doesn't make it true. A well constructed one like the one AEM makes is the way to go.

Look at that picture and tell me how THAT bypass valve would reduce power.

1. What does that picture do to prove or disprove anything?

2. What makes your opinion trump everyone elses?

"Wannabe know-it-all?" Pot. Kettle. Black.

DaytonaPrelude · 12-12-2008, 04:53 PM

Quote:

Originally Posted by Blacklude1

1. What does that picture do to prove or disprove anything?

2. What makes your opinion trump everyone elses?

"Wannabe know-it-all?" Pot. Kettle. Black.

Not many choose to explain WHY they think that all air bypass valves cause so much of a power loss, and if they do, they say it is because the bypass valve is sucking in hot air. It is NOT an opinion, that bypass valve will not suck in ANY air at all until the suction increases to nearly 100%(like when it is submerged in water).

Read this article and actually consider the differences between the AEM bypass valve and some crappy one BEFORE you come spreading your wealth of knowledge here.. AEM Air-Bypass Valve - Tech - Sport Compact Car Magazine They actually have first hand knowledge, which is more than any person on here has given.. unless you have had this particular bypass valve you really CANT have an opinion.

I have had one of these bypass valves, and the foam outside eventually wore down till you could see the rubber flaps. From experience, I can tell you that it sucks NO air at all through the air bypass valve.. until it has no choice.

1. What makes you think an air bypass valve will reduce gains so drastically if it is easily proven it is not sucking in any warm air? I have yet to see anyone make a compelling argument about this WHILE considering the differences in the products.

2. Where do you get your knowledge, or do you just go with the popular opinion?

I am not going to argue this since no one on these forums has yet to give a real reason.. and I also know most base their info on what they were told and have no first hand knowledge to base their opinion on. Why waste my time like that? More or less I was warning the noobs on the forums not to take everything people like you say as truth, most likely you are wrong as often as you are right.

prepreludesh · 12-12-2008, 05:08 PM

Am I the only one that notices that Blacklude1 finally has got the "yang" to his "yin" back?

http://www.preludeonline.com/f50/any...-pm-dp-238361/