WAI vs CAI
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Joined: Jan 2002
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From: Clueless like Shaggy n Scooby before commercial, break
WAI vs CAI
Well, a friend ownz a '00 Altima and I have checked out some Altimas.net and read some of their forums in an effort to help him modify his car.
On Altimas.net, they talk all about WAI's, which is obviously Warm Air Intakes. I believe we here at H-T refer to them as Short Ram Intake or SRI. Anyone ever heard this term before because it sounds asinine to be boasting "Hey, my intake sucks in warm air"!
Here's a link that someone posted that is a sticky on their board.
http://www.nissantalk.com/foru...09410
It is accepted as truth and everyone is told to read it when deciding to buy an intake. My friend read it too, and bought a "WAI" that he says will boost his high end.
Now, I think that's a crock of ****, I never heard of SRI's/WAI's boosting the high end. Anyone care to comment on this thread and what the Altima guys accept as fact?
On Altimas.net, they talk all about WAI's, which is obviously Warm Air Intakes. I believe we here at H-T refer to them as Short Ram Intake or SRI. Anyone ever heard this term before because it sounds asinine to be boasting "Hey, my intake sucks in warm air"!
Here's a link that someone posted that is a sticky on their board.
http://www.nissantalk.com/foru...09410
It is accepted as truth and everyone is told to read it when deciding to buy an intake. My friend read it too, and bought a "WAI" that he says will boost his high end.
Now, I think that's a crock of ****, I never heard of SRI's/WAI's boosting the high end. Anyone care to comment on this thread and what the Altima guys accept as fact?
Junior Member
Joined: May 2002
Posts: 170
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From: Italy
Re: WAI vs CAI (SeaBass)
Do some searching on here and you'll find your answer. Quite a few people have dyno's around. But these are civic engines, which will respond differently than an altima engine.
https://honda-tech.com/zerothread?id=514964
https://honda-tech.com/zerothread?id=556313
https://honda-tech.com/zerothread?id=514964
https://honda-tech.com/zerothread?id=556313
Honda-Tech Member
Joined: Dec 2001
Posts: 3,643
Likes: 1
From: assville, MI, USA
Re: WAI vs CAI (Unsung EM1)
It doesn't really *boost* your high end, but in the right engine package it can create more high end HP than a CAI.
It all comes back to intake velocity.
A larger short intake sacrifices intake velocity for intake quantity.
A longer tubed smaller intake sacrifices quantiy for intake velocity.
The result is a difference when volumetric effeciency occurs. It happens much earlier on CAI intakes because of the increase intake velocity, and that is why you see the famous AEM hump.
A short ram reaches volumetric effeciency later, so if it occurs near your peak HP it will result in better high end performance.
Again, this all has to work together as a package. You can't just throw on a 5" short intake and expect to gain 10hp at redline.
It all comes back to intake velocity.
A larger short intake sacrifices intake velocity for intake quantity.
A longer tubed smaller intake sacrifices quantiy for intake velocity.
The result is a difference when volumetric effeciency occurs. It happens much earlier on CAI intakes because of the increase intake velocity, and that is why you see the famous AEM hump.
A short ram reaches volumetric effeciency later, so if it occurs near your peak HP it will result in better high end performance.
Again, this all has to work together as a package. You can't just throw on a 5" short intake and expect to gain 10hp at redline.
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