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Test Vehicle : 1999 Honda Civic Si with 37,000 miles
Baseline HP : 137.5 hp

Here we go!
AEM V1 : 142.0 hp
AEM V2 : 141.9 hp
AC AutoTechnic : 141.6 hp
CompTech Icebox : 142.9 hp
DC Sports DAC [2 piece]: 143.3 hp
Iceman [2 piece] : 142.0 hp
Injen RD : 140.7 hp
Injen [2 piece] : 143.7 hp


http://forums.clubsi.com/showflat.php?Cat=&Board=UBB1&Number=1967355&page=0 &view=collapsed&sb=5&o=&fpart=1

"Oh but its new, so it has to work better!"

[IMG]i/expressions/demon.gif[/IMG]

 
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and you're telling us because......?[IMG]i/expressions/face-icon-small-confused.gif[/IMG][IMG]i/expressions/face-icon-small-confused.gif[/IMG]


j/k man..jus pullin ur strings.[IMG]i/expressions/face-icon-small-tongue.gif[/IMG]

 
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Nice post. I was waiting for something like this. [IMG]i/expressions/beer_yum.gif[/IMG]

 
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good news! i was thinkin i got screwed cause it was better than my Injen CAI, but it turns out INJEN is the best.

 
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Thanks for the info. I really dont know about the performance of the other intakes you have down. AEM should out do all the others out there.

 
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This is just one application, it may be different for our cars......but I think there would be a bigger difference than that between the V1 and V2....that design is horrible.

 
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Why should the AEM win? Because Imporn Tuner says so?

 
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you would think that.. and power gains WILL be different as well as where they occur, but the if the new design was working like it was susposed to, you would notice an increase with the new pipe, no matter what application its being used on.

 
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Seems a little strange to me that they (AEM) would advertise such a big hp gain knowing full well that it would come up so terribly short. [IMG]i/expressions/face-icon-small-confused.gif[/IMG] If that were the case than they should fire their marketing team. There has to be more to it than that. Just my $.02.

 
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An intake is just a pipe, there really should not be a difference between any of them, adn how much HP you gain

 
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agreed! but wasnt the V@ about better torque or something [IMG]i/expressions/face-icon-small-confused.gif[/IMG]
but in the end, its jus a stick with a filter at the end of it

 
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that's not true. intakes may appear similar on the outside but could be completely different in terms of air flow restriction on the inside.

simply put, bending the pipe one way might completely screw up the air flow going from filter thru the pipe to the throttlebody and then on the flip side bending it the other way could greatly improve air flow. getting the air that's a little bit denser to the throttlebody faster and without too much restriction from the piping.

edit: i also believe my argument can also be applied to exhaust headers, as air flow restriction is very important in getting all exhaust gases out of the chamber thru the headers into the cat and so on

some one with more knowledge <cough> joe <cough> could shed some more light on this ****

 
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I don't even have an aftermarket intake, so you could claim i'm talking out of my ***, but You shouldn't just rely on sheer numbers when judging a performace upgrade. I would like to see a before and after dyno chart to see the gains across the whole band, if it increases horsepower and torque more in lower rpms than other intakes then it's worth it, also I have yet to hear it tried on one of our civics. So what if it's .1 horsepower less at it's peak rpm, no one drives around in that range anyway...
Just my thinking on the matter... don't hate on me...
-Mark

 
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I agree with Jon. by applying this to our cars.. I strongly believe the AEM will win over the INJEN, due to the 90 degree elbow that INJEN CAI has at our TB. that thing looks damn restrictive to me. I wonder what could happen if they were to mold the inside with very slight spirals, or actually, create a vortex in the intake. i wish i could build intakes.

 
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when you dyno tune something... the usual results yo hear about are the PEAK numbers, meaning the highest number you get, no necessairly where the PEAK RPM is. if a spike in mid RPM range got u up to that PEAK HP, then u'd be more likely to hit that PEAK HP.
get the drift?

 
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i can see what renamazazo is saying about throughout the power band stuff. the skunk2 intake mani on the itr did not increase hp compared to the stock itr manifold (dyno tested). it did however, smooth out the torque band (visible on the graph) and while not increasing number wise it could definitely be felt that the itr gained a little mid range oomph while on the street/highway

 
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Does the AEM V2 cost as much as any other intake on the market?

 
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No. In fact, the V2 costs more. About $100 more.
For our cars(7th gen civics), the V1 AEM CAI costs about $250 and yielded 6 horses and 6ft/lbs of torque on AEM's test car. The V2 costs $350 and yielded 1 horse more and 1 more ft/lb of torque than the V1.

If that's the only mod you're doing, it's probably not worth it. It _may_(don't quote me on this, I'm probably wrong) yield more if you coupled that with an intake manifold, throttle body, high-compression pistons, etc. It has yet to be tested on a heavily-modded engine, to my knowledge.

If any of you guys have some light you can shed on this, it'd be much appreciated.

 
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Why compare with PEAK numbers? What do you think the companies like AEM advertise? Thats right, PEAK numbers.

And yes, flow design is supposed to help increase flow. That was the entire point of the new V2 design. Supposedly it uses a reverb chamber to "stack" more air into the intake manifold to create more power. But as we can see thats bullshit.

 
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However, just posting the peah HP doesn't fully represent how good the CAI is. We'd need the dyno graph to see how smooth it is, where the peak is at, etc. to see which one is the best.

I think spending $100 more for a filter on a stick is too much, but I don't think the info is enuff to call BS.

-Aki

 
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What was stock dyno?

 
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Test Vehicle : 1999 Honda Civic Si with 37,000 miles
Baseline HP : 137.5 hp

 
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I see that now.

 
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The Injen CAI doesn't have the 90 degree bend, the Injen SRI has that.

 
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that's pretty frickin gay ... I think Turbo magazine is supposed to do an in-depth article on the V2 this month anyway ...

Those dyno figures are also on the 99 si ... I'm sure it's partially different for the 7th gens

 
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I bet you that those numbers will be less thans the SI's

 
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like it said on the clubsi forum it would be nice to see the whole dyno plot....

 
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I know a few websites that will sell it for $250 or less so its not neccesarily a $100 more. You just have to shop around. I plan on buying one. I don't think AEM would put their reputation on the line and put out a mediocre product. Like many people have said, you can't judge them on just one application or one test.

 
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I wanna wait till someone from this site orders one and does their own review before I even think about purchasing it. I just hope its not one of those quacks that think they gained more power because its louder or something.

 
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Until I see numbers for a 7thgen I can't make a final decision