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Engine cia & ram air question...made myself sad...

Discussion in 'Powertrain' started by Cuztomrollaz98, Aug 6, 2006.

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    Cuztomrollaz98 MAD VLAD!

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    What year 8thgen do you have?
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    JspeXAE102 Well-Known Member

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    wtf is a Cold Intake Air?
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    sxlostv1 New Member

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    ram air intake is like a cold air intake but better. this is cause you get air forced in through a scoop somewhere in the front as you're driving along. think like you're sticking your head out the window at 60 mph, feels nice dont it ?? engine likes that too,.
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    destca New Member

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    cia & ram air question...made myself sad...

    i was wondering around teh forums looking up thinks on cia and ram air. i hear alot of ppl saying that if u use and ram air u will lose power rather then gain power like everyone wants. i also have heard some one say that u should just find a civic cia of the same year and that will work too, which im pretty sure is lie as well, being that the civic doesnt have a maf on it less im wrong which is quiet possible. with elp being the only ppl i have heard making a cia for the 8th gen rolla what alternative to we have to getting a cai on out car besides making our own. im sure there is some random companie that makes one some place but i havent heard of any that do :(.

    i was also wondering if i take a tube or something and connect it to the end of my ram air and then connect it to the our side of the car via a vent or something. will i lose ne power or gain will i gain power from this. ive seen ppl do this but is it still sucking in warm air or is getting enough cold air from the outside to gain a little more hp then my stock one. im not sure what to do lol ill prolly be stuck making a cia for my car. neways its kinda sad that this car has no after market products /sigh :(.
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    Corolla DX-R AE100

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    i think he mean ram air as in SRI.. SRI just takes air from ur hot engine bay instead cooler or cold air from near the bumper which CAI does... if want the real ram air, u probably need to cut a hole in ur old and put a functional hood scoop w/ pipe to ur intake or cut a hole in ur bumper or take out one of ur headlight and put a pipe to ur intake...
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    destca New Member

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    lol srry i was drinking when i wrote this :p
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    destca New Member

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    i have a 2000
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    destca New Member

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    id say that makes since. how much more hp can u get out or ram air over cai or is there even ne differance. i was looking at getting the weapon r with the ram air attactment. are these ne good :S havent heard or ne one using them around the forum so i dont know what to expect :S.

    http://store.racinglab.com/to99cowesewe.html
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    sxlostv1 New Member

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    this is what i think. cold air intakes tend to draw colder air, but you risk hydrolock when you run over big puddles. also your throttle response will suck and you lose massive torque. regular short ram intakes don't give you more power because you get hot air from the engine bay, but you do retain more torque than cai. from what i know, every 10 degrees hotter it is in intake temperature is 1hp that you lose, and vice versa. so best imo, take off intake resonator box (behind bumper) and get a k&n drop in filter.
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    Cuztomrollaz98 MAD VLAD!

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    for CAI's for the 8thgens u have to go custom, ELP used to make them but well they're pretty rare. I had a Injen SRI and all it did was suck up all the hot air and it actually made my car run worse SO not recommended :)
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    destca New Member

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    i read some place on vamps diy page (now i cant find the diy that said this) that when he removed the resonator box he was losing some power or somthing along those lines. idk maybe ill try it, thanks for ur help <img src="http://vvti.net/forums/images/smilies/biggrin.gif" border="0" alt="" title="Big Grin" />.
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    DrNinjaman Guest

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    In theory, a cold air intake, whether ram air or not improves power output by supplying air to your engine which has not been heated by close proximity to the engine or radiator. The amount of power this frees up is usually small, but if you are running a turbo or something which produces a lot of heat it might help. If cooling the air is that important though, use an intercooler. Ram air intakes make use of the air pressure increase that occurs at the front of your car at high speed to provide a supercharging effect. For the record, ram air has almost no effect below highway speeds, and very little effect even then. Race cars and bikes use it because in a race, 1-2hp can be the difference. The problem with both types is unless the designer has taken into acount the resonant effect of the new intake, you can significantly affect the engine's torque curve in a most unpleasant way.

    Factory air intakes are tuned to the motor. This means that the volume and shape of the intake is important. Since IC piston engines draw air in pulses and not in a continuous flowing stream, they produce vibrations in the air stream in time with the opening and closing of the valves. These vibrations cause the intake (and exhaust) to resonate at certain frequencies which correspond to specific engine RPMs. At some of those frequencies, the airbox will help the engine, by pushing a high pressure wave of air at the intake valve precisely as it opens, thus stuffing more charge into the cylinder. At other frequencies, the intake has the opposite effect; it pushes a low pressure wave at the intake valve, slowing cylinder filling and reducing power.

    All intakes do this. The trick is to align the rpm range that the intake boosts power with a spot in the powerband where the engine needs help, and align the range where the intake reduces power with a spot in the powerband where the engine makes plenty of power. This is what the factory intake is designed to do. It creates a smooth, drivable, responsive engine.

    Most aftermarket intakes have significantly less volume than the stock box. This will cause the boost effect of the intake to occur higer up in the powerband. This can produce more peak power, but the trade-off is a soggy hole lower down in the powerband that the intake is no longer propping up. So think carefully about what you are doing when you mess with the intake, particularly when you build your own. It's more than just a box to hold the filter.

    On a side note, regarding K&N filters, while I like their product on my carbureted motorcycle, they are not particularly well suited to any car with a mass airflow sensor immediately downstream of the filter. The oil that they are soaked with collects on the sensor and can impair it's function. Not good for smooth running.

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