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plastic doesnt absorb as much heat...thus oem intake helps draw in cooler air.

 
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the problem is nobody here has the money or time to dyno each product on their car. I try and post stuff, but it's at best gonna be for 2-3 parts combined.

 
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http://www.importtuner.com/tech/0108it_pphondaex/

 
Rep Power: 320

i've had the aem sri in my 04 ex auto. I used it for about 5k, mostly highway miles. I didn't dyno the car but i can tell you there were some small gains with the intake. I did lose a noticeable amount of low end torque when compared to stock. At 3krpm and below, it felt worse then stock. At 3k rpm+ you feel a noticable amount of power increase.


The aem sri did improve my mpg and i notice with the intake, going 80mph my rpm's were 3000. Driving the same freeway using stock my rpm is 3500.

I know its not very scientific, but that my experience with the intake. If you can get it cheap, then i think its a decent investment. The only things i did not like about the is that with no reasonator, it was loud as hell, especially during highway driving. I talk on the phone a lot and people have trouble hearing me on the cell. The sound dampening in our cars are so terrible.

Most people dont do a lot of highway driving so the low end torque from stock is better. The gains are noticeable, but its not like turbo or anything.

 
Rep Power: 309

I'm putting an end to this arguement.

Here is my dyno chart with an AEM SRI over stock.

 
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I don't know bout anyone else but I bought one off ebay for 43.00, and It seems faster right off the line but if I floor it in any gear I get a lowend bogging sound and no extra speed, But I would like to dyno it just to be sure, depending on much they charge for the test?

 
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just my two cents....i can tell a diff between low and andhigh and power just when i switch between cold air and sri...so i think you guys are both right and wrong. i think sri and CAI produce more high end power than stock airbox, but not as much low end torque, so your all both right and wrong

 
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Hey Hustle,

Was that dyno using an SAE correction? because without it the numbers dont really mean much. Just asking cuz it doesnt say SAE corrected HP. Also, it looks a little high, must have been a dynojet.

 
Rep Power: 320

lol thats about right

 
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Hmm, I'm not sure. I'm gonna call the shop where I dynoed the car on Monday and double check with them. But off the top of my head I think it was using the SAE correction.

The reason why it looks a little high is because I had a boost spike during the dyno. Even though I dont have a turbo boost spikes can happen on N/A SOHC D17s like you see in my dyno.

Thanks for noticing.

 
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Dude that's some funny stuff...

FWIW, I suspect that given the small displacement of our motor length of tubing as well as heat and tubing diameter has something to do with results as well. I have exactly AEMs example, 01EX auto and I have their SRI. I of course wasn't dyno'd before and after but I dected no loss at the low end a little pick up at the high end. I don't think heat is much of an issue with our motors and so a short amount of tubing with little to no bends and a close to stock diameter pays dividends. Just a suspicion of mine. For example, I used to build up rotary motors. The air intakes are always super short even though the rotary is much, much hotter then a piston motor and of course put out more hp (not to mention smaller displacement). I also suspect some people see declines as they run catbacks with large diameter tubing and are losing back pressure and torque

 
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I have the AEM SRI in my auto. I agree that we loose low end but top end seems a lot better. I hate it because off the line the car is slower then a snail and if you're racing then you'll be playing catch up with the other car for the rest of the time. If you guys are all about sound and looks then I guess its not a bad thing. For the performance guys, I would suggest that you save that money, invest it or just wait and buy a brand new car. Turbo and swapping the motor are your other choices but they will cost a fortune.

 
Rep Power: 268

I admit that I agree with Gearbox that intakes rob low end for those who do a lot of city driving. But I believe the couple, and I expect only a couple, of extra HP at the top for those of us who do a lot of highway or open road driving is worth it (if you can get it cheap).

Also, I have always been sceptical of immediate dyno numbers on mods. I always thought the motor needed a little break in time to really get the full gain. I know our ECU's are supposed to be pretty close to "immediate" updating, but changing the amount of air intake or exhaust flow has got to take some time for the engine, or ECU, to fully appreciate the change.

 
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Hmmm. Thats why when I put my cold air on the motor light came on for about two hours and then just went off. So my ecu was making adjustments?
I mean I havent had any probs sincebut I wandered why it came for those few hours.