| 2 air bypass valves? - Click HERE for Original Thread |
| Mekanik22 |
| I know that one eliminates water ingestion but if the intake sucked up like a whole intake tube FULL of water, would that valve control it enough that you don't ruin your engine? Would two of these valves work? Or would you lose alittle "power"? Is there even any point of 2 of these valves? Thanks. |
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| curtis_rak |
A test was done a while back in an Import Mag where they extended a CAI into a fish tank full of water. There was a bypass valve setup between the TB and the fish tank. When the car was revved, not one bit of water went up the pipe.
Link to test...
http://www.sportcompactcarweb.com/tech/0104scc_tested/
Basically, as soon as there is any kind of pressure change in the pipe, the bypass valve will become active.
As for having 2, I wouldn't bother. |
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| ChromeDragon |
CAI is a scam anyways. Make power with something more useful, like cams and fuel management.
Chromey |
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| curtis_rak |
I dunno man, the AEM CAI makes 9.7hp on the dyno for my car.
Thats 9.7whp for about $170. |
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| ChromeDragon |
quote:
Originally posted by curtis_rak
I dunno man, the AEM CAI makes 9.7hp on the dyno for my car.
Thats 9.7whp for about $170.
On a dyno yes, but the car isn't moving. When the car is moving the stock airbox will pull cold air in. Who did that test that yielded those #'s? |
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| ChromeDragon |
quote:
Originally posted by curtis_rak
A very unbiased AEM did the test....;) (for my car)
There are independant sources who have tested on other vehicles and showed decent results.
Usually anywhere from 5-13whp on most vehicles.
There are lots of graphs around. Here is a couple examples.
http://www.nissanperformancemag.com.../projectaltima/
http://www.hondapitstop.com/accord/...1990aemcai.html
And you can be sure that AEM wasn't making sure that the engine wasn't nice and hot and were blowing a fan towards it to simulate driving on the road. And when they were testing the CAI they didn't cool the engine and intake tract and blow cool air in the direction of the CAI. You can always be sure of that!
Chromey
P.S. The only way I see them being of benefit is if the stock intake is stupidly restrictive. |
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| WookeysRX7 |
quote:
Originally posted by ChromeDragon
P.S. The only way I see them being of benefit is if the stock intake is stupidly restrictive.
I think almost every stock airbox is stupidly restrictive. Even in my car when i change it from stock air box to K&N cone filter my boost jumps from 9psi to 11psi... Thats good for about 15-20HP!:bthumbup: |
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| GSR-TH |
quote:
Originally posted by ChromeDragon
CAI is a scam anyways. Make power with something more useful, like cams and fuel management.
Chromey
And cams will do a whole lot on a car with stock compression and no headwork, right? |
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| ChromeDragon |
| You'd be surprised what cams and cam gears can yield if you push it!:bthumbup: |
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| energie |
| Would having a bypass valve decrease the amount of horsepower, compared to not having a bypass valve? |
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| GTS Jeff |
quote:
Originally posted by ChromeDragon
On a dyno yes, but the car isn't moving. When the car is moving the stock airbox will pull cold air in. Who did that test that yielded those #'s?
yea, so when the car is moving and getting colder air, then there will be even more gains to be had, which is a GOOD thing. :confused: |
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| SplineZ |
I dont think it'd make any difference whatsoever, unless your continually scooping enough water into your intake to cause it to actually function; it will just sit there and look perdy..
James Z
quote:
Originally posted by energie
Would having a bypass valve decrease the amount of horsepower, compared to not having a bypass valve?
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| autot |
| What a stupid arguement. What is better, cams and gears or cai. Put that cai on, then do your cams, adjust timing and the results will be even more impressive.( especially low end tourque.):cool: |
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| newtuner |
| the theory seems like a good idea but, how much are we looking at here if it around 100 buck seems like cheap insurance to save your engin. On the other hand if they want like 300 bucks then I think I would think a little more about it before I went and bought it. Some people may say when are you going to dip your intake into water or will enough rain get in to be a problem, well just thinkyou will be sorry the day it does happen. I know I would be pissed.:angry: |
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| speedtech |
I think those bypass valves are for people who like to drive through 3 foot deep puddles. There is no use for it unless you dip your whole filter under water. I have driven through heavy rain and my filter is exposed to water cause my filter sits behind a hole in my front bumper and when i got home it was drenched with water. Being a little scared i take my intake off and there was no traces of water anywhere but in the filter. Your motor doesn't have enough sucking power to suck up little drops of water. It will only suck up water if you dipped your whole filter under water. And that's how AEM tested their bypass valve. They didn't slash little amounts of water onto the filter they just put the filter under water and that's how they conducted thier tests.
But yeah bypass valves are made for retards who like to drive through huge water puddles, that zeizes their motors and then wonder what they did wrong. :confused: |
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| GTS Jeff |
quote:
Originally posted by speedtech
I think those bypass valves are for people who like to drive through 3 foot deep puddles. There is no use for it unless you dip your whole filter under water. I have driven through heavy rain and my filter is exposed to water cause my filter sits behind a hole in my front bumper and when i got home it was drenched with water. Being a little scared i take my intake off and there was no traces of water anywhere but in the filter. Your motor doesn't have enough sucking power to suck up little drops of water. It will only suck up water if you dipped your whole filter under water. And that's how AEM tested their bypass valve. They didn't slash little amounts of water onto the filter they just put the filter under water and that's how they conducted thier tests.
But yeah bypass valves are made for retards who like to drive through huge water puddles, that zeizes their motors and then wonder what they did wrong. :confused:
:bthumbup: air is less dense than water, and will always get sucked up before the water does.
its the same reason u dont suck water into your mouth when ure using a waterbong |
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| speedtech |
quote:
Originally posted by GTS Jeff
:bthumbup: air is less dense than water, and will always get sucked up before the water does.
its the same reason u dont suck water into your mouth when ure using a waterbong
That was a great example! I would have never thought of that. |
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