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There was a discussion earlier as to the hp gains of a 2k1+ automatic civic ex with a Injen CAI. The person said that they definitely felt more power but everyone basically said there was only a 1 or 2hp gain. Im looking into buying a AEM SRI and Ive been looking on AEM's site and seems there would be about a 6-7hp(to the wheels) gain with the SRI according to there dyno graph. This i guess would equate to about 10-12hp to the flywheel. Am I right in assuming that a SRI is more suited for an automatic since that AEM doesnt even make an CAI for the automatic?

AEM SRI

 
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6-7 hp to the wheels looks more like BS numbers its more like 2 or 3 the most

 
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Simply put there's no way a SRI can produce higher #s (Torque OR HP) than a CAI. I don't care WHAT kind of car you drive. ESPECIALLY IN HOT DRIVING CONDITIONS.

 
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For once MangoEX is right. SRI is pulling all of the hot air off of the engine. Unless you get the K&N FIPK II which has a heatshield to black the engine heat. I still don't think it will get as much cool air as a CAI from under the car.

About those strong gains. We all feel great gains when adding aftermarket intakes. but honestly 75% of it is all in our head and 25% of it is actual gains. Regardless you will love the sound that you get out of your aftermarket intake.

 
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I have the AEM SRI and i feel less "gain" (if any, ha) than my previous Injen CAI.

It's all for sound and looks [IMG]i/expressions/face-icon-small-tongue.gif[/IMG]

 
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Do you have a 5 speed or auto?

 
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So basically what everyone is saying is that AEM is lying? If so, thats false advertising and they can get in a lot of trouble. I would imagine a SRI would be better on a automatic since that it has longer and less gears,thus doesnt rev as quickly,which in turn doesnt create as much engine vacuum as a manual equipped car. So I guess a shorter intake would be better for an automatic since that the air has less to travel. Where is everyone getting 1-3 hp from?And is this to the wheels? If anyone has a dyno graph that proves that an AEM SRI only makes 1 to 3hp, could you post it?

Thanks

 
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ak I seem to think differently because I have an Injen CAI but since its been raining around here I converted it into a SRI. And Now it feels that the SRI works a little better than the CAI but then again it might be in my head. by the way i have an automatic.

 
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[IMG]i/expressions/face-icon-small-confused.gif[/IMG]this is my first time on, so im not so sure how to do this. with AEM SRI i could definitely feel a difference in anything above 3000, but lost as much power below 3000.It definitely reacts well to cold air better.Once it got below 50 degrees here, i bet i gained 15 hp.So it makes a bigger difference in how u drive and the weather where you live. Looks awesome! Sounds great! Was not something i regret.

 
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i first purchase injen short ram and i feel their is gain... but after i switch to injen race division definately more gain..

 
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Actually you are wrong. You absolutely CAN get better performance numbers off an SRI over a CAI on a dyno. This is also a perfect example of how ads for performance products (even with "proven dyno figures") can be VERY deceiving.

What does an intake do? It allows the engine to ingest air. Theoretically the more air which is drawn in (mixed with the appropriate addition of fuel, and exhaust scavenging) the more power the engine is capable of making... to a point. The colder this air is, the denser it is, and therefore the colder the air the more 02 is available in the same volume of gas.
That would mean that a CAI will be better, because the SRI pulls hot air from under the hood right?

Sure. If the hood is closed. How many closed hoods do you see while the car is being run on the dyno? In a lot of cases people will bring in huge shop fans to blow on the car, so not only is the heat being dissipated fast and not trapped by the hood, but the SRI is able to take in fresh cool air, and crams it into the engine without having to draw it up through 3-4 feet of tubing, unlike the CAI which is sitting somewhere under the car, that’s not moving and not getting any air flow from UNDER.. which of course is why it works better on the road.

 
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People also tend to think an SRI "works better" because they are ALWAYS louder then a CAI... and by a LOT in some cases. Louder does NOT = faster. It’s also a myth that rain will hydro lock your car if you have a CAI. If you wash your car the entire filter, at least on my car, gets 100% soaked, just like when it rains. So what? Any of the water from that gets will be sucked up into the intake pipe, and vaporized before it even hits the intake manifold. You have to literally completely submerge the intake filter in order to ingest enough H20 to cause any damage to your vehicle. And if you are driving through 3 foot deep flooded streets in your lowered civic, you don’t deserve to have ANY mods. In short, unless you frequently ford rivers, or are a complete moron you aren’t going to damage your car with a CAI, rain or not.

 
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What determines how much air is drawn in and how fast it is drawn in?

 
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the engine

 
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what about the transmission and gearing?

 
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no. not directly.