Cold/Warm Air Intake
 

This is my buddy's 1991 Accord that he just got about 2 months ago

So far all we did to it fuel economy wise was seafoam it before an oil change then run it on Shell 91 octane and put this in

It definately has more throttle response and power, but after about the first week he actually said it started getting better MPG than before the filter

I was just wondering what you guys would consider this
A cold air or warm air or like a short ram?:confused:

I think it depends on the whether, but according to him it is running a little warmer
here's the car
http://i922.photobucket.com/albums/a...57840_3089.jpg

Here's the intake system
http://i922.photobucket.com/albums/a...57840_3089.jpg

it's pretty much just a cone filter in place of the stock airbox

It's warm air. The engine compartment is definitely warmer than ambient air temps. The stock system probably supplies cooler air to the throttle.

Also, it is not any sort of ram system. Ram means it uses the high air pressure in front of the car to ram a little extra air into the engine. At wide open throttle at 100 mph with a well designed ram air system you may see a couple of additional horsepower, but not much more than that. The biggest horsepower gain would really be from using the coolest air avialable.

I can attest right now that he's losing power by adding that filter there.

If you don't believe me, dyno the car before and after, and then try to explain the results.

well i believe the reason it feels more powerful is not neccesarily POWER but it has great throttle response and that usually can be mistaken for power

but I dynoed my other friends 94 accord sedan and it gained 3 HP on the dyno This is because it was before after with the hood up and i don't know that the hood up with a fan at the engine is very accurate

You have dyno access? Sweet! What all have ya done on it?

Yeah there's a dyno at my college's autoshop out here We've only done a few dyno runs on it though you have to be in autoshop to bring a car into the dyno

But this is a warm air intake for sure right guys? that would explain the extra mileage

On the dyno, with the hood up and a huge fan blasting air at it, it's a performance enhancer. On the road, with the hood down and the engine heat trapped in the vicinity of the intake, it's a warm air intake. Quicker throttle response is usually noticed, but that is not the same as actual on-road power improvement.

Oh definately but it did at least have a fan on both Before and After runs
So they were in the same testing environment

Yeah i know sound does alot for performance for most young people haha. get your kid a loud muffler and an intake and they should get a bit less speeding tickets cause they THINK they're going fast haha

definately, get the air outside. It should be dramatic enough to reset the ecu, the battery, or however you do it.
I am learning now, even on a 23 year old carb little engine, it needed cold air
at all times, all temps...I feel rather silly about it. It is like I shrunk to a shrinking engine, and kept going the wrong direction. Anyway...outside air, big plastic tube, inert, as much as possible. It may pretend to be colder, it may pretend alot of things guages can't tell..just do it.