Anyone ever try...

to cut out the front of the hump on the hood? Or is that a dumb idea? You know, give it a kind of "Ram-Air" look. ;)





--1991 Mitsubishi Eclipse GS Turbo

dumb idea!! just go buy a hood with the ram air feature... i see them on ebay all the time, they are like $400 but it is a full funtional ram air hood, you can either order it for a GST or GSX which directs the air to the passenger side, cause thats where the air filter is, or a RS or GS which directs the air towards the drivers side...

plus if you make it out of your stock hood i think it would look kinda stupid cause it is not centered, and it probably wouldnt work as good.

Does anyone know where I could get a hood like the one on my avatar? I have searched all over and have never seen another that looks like it.

i dont think its a dumb idea at all especially if you dont have a lot of cash and are good at those kind of things. i saw it done on dsmtuners or 2gnt. i would only do it if i had an extra hood laying around though b/c i dont trust myself

i think ramair and functional in the same sentence is an oxymoron.
however if you like, you could cut out the front or rear of the hump with success if you know what you're doing. cut, round, sand, rubber on the edges, grate for rocks.. routing for water if you were so inclined.. is a way you could do it.

The only thing that comes to mind for me is the "ram air" would be ramming air into your timing belt cover :icon16: IF it was over the filter it would make sense, as someone said above. Putting a scoop of some sort over the filter, and boxing it in, can be helpful and has been done before. But then we get into the whole cold air intake on a turbo car debate again, if your car is turbo :)

95 GSXRacer, RockinWRX once said that since the intake area from the bumper is so large, that at least on the WRX scoops, air actually exits the scoop at average driving speeds. I wonder even if it's over the intake will it do any good? (wrx one is over the intercooler if i'm not mistaken)

Boxing in the intake is cool, something i would like to do but have yet seen a way to make it weather proof. This is also why i'm not keen on hoodvents placed right over the spark plug wells.

IT depends on where on the hood it is. At the front of the hood is a high pressure area, at the front grill basically. As the air speeds up over the center of the hood, pressure drops, and when it hits the cowl/windshield area pressure increases again (think "cowl induction"). In the WRX case where its in the middle of the hood, I can see that happening as you say.

If you do it over the filter with a box around it, the vacuum from the mootr will pull air in, high or low pressure. In either case the pressure will be higher than the vacuum in the filter, so the result will be flow into the filter. IF you dont box in the filter, the high pressure in the engine bay could cause that flow reversal, and you'd be getting hot air running by the filter, as usual :)

The engine bay is like a big scoop that just catches air, with no good place for it to exit. There is alrady a lot of air running under the car, but most of it will go that way. Adding a hood "extraction vent" will give the air an "out" and you will get more flow through the radiator and just as importantly,the FMIC. It will also lower engine bay pressures, reducing the reverse flow effect. i plan on adding one of these extraction vents in my hood this year. Basically the WRX scoop put on backwards, just in front of the motor, so there is a clean path for air to flow through the FMIC and out the hood. The trick is to keep water from dripping on the exhaust manifold when its raining. ;)

i know for big huge scoops like what are on funny cars they have like foam plugs for them... couldnt one of these be made for say the wrx scoop and it would pop in and out easy enough if it began to rain

Well, i drive my car daily. So plugs and covers are kinda impractical. My Second option would be to just block off the filter from picking up radiant heat from the engine and radiator. Then doing a simple louver style vent over it backed by metal mesh to keep leaves and crap out. Also included in my plans would be to install louver vents over the throttle body area. This area I'm not too worried about water and you only need small vents to cool underhood temps.

I Was thinking of using "naca ducts" for the filter feed. They are those tear drop shaped, recessed/flush moutned vents. Typically used for extraction vents, but used backwards could feed some serious air to a filter, without being terribly conspicuous.

Some intersting vents at www.carbontrix.com. These are the guys that do stuff for RRE.

Here's the nicest I've seen it done. A little time and some fiberglass and you're good to go....
http://www.miaminightout.com/spotlight/automobiles/032002/index.shtml
Gotta love the s15 headlights.