So I have been interested in the RE Amemiya Sleek kit for a long time now. I really like the aggressiveness of the intake duct you can install for a "ram air" style intake and that it fits the car more than most pop up headlight covers (imo). But in my mind I always figured that if you use the intake duct that you would pipe the directly into your filter set up.

Whether or not this is more efficient than the 99 spec intake system or something like the auto exe system that seems very popular is certainly up for debate.
But the main question I'm wondering is if anyone has done this? Has anyone used the H11 kit or similar with a headlight duct and then fed that into a filter box or other setup?

If anyone has, then I'd love to hear about the process and what parts you used and what filter set up as well.
My idea was to use a set up like the Blitz intake that has a circular opening at the front and then using custom piping to run to the air duct would be fairly straight forward?

For my case I am currently still running the stock twin turbo set up with the goal of going non sequential in the future, but this set up could definitely still apply to single turbo applications I'd imagine.

 

No personal experience but if you like the look, I say go for. I just don’t see any real performance benefit….especially with the stock twins. I doubt that neither air pressure or air volume will be increased beyond those intakes you mentioned, or other boxes that source ambient air from the nose.

 

I didn't go into the conversation regarding performance for a few reasons, but like I said in my original post if you have your intake/turbo set up in the stock general area, it wouldn't be too difficult to just make more custom piping. So having a custom turbo set up shouldn't be a problem for adapting the duct to your new set up.

Another idea I had that my dad actually pointed out to me was the possibility of copying the duct to the other headlight. This would of course mean you would need to fab the same style duct for the other side (I don't think RE-A makes that but I might be wrong). But hypothetically if you could fit piping across to your intake to a Y or one duct directly to each turbo on a twin set up, you could definitely get more air flow. The severity of losing MORE of your headlight would depend on the use and whether or not it is meant to be streetable. A final argument is that it would guarantee that the air coming in the intake would be cool, more realistically, ambient temp air and zero engine air.

Are their better ways to do this? Probably.
Is it practical? Not really.
But I don't consider many things about the FD to be practical. Whether it's a show car or a race car people own cars like this for fun and to me, this idea is really fun. If you are going to have a headlight intake duct, might as well get all that "fresh air' into your intake, right?

This idea is definitely something I will be pursuing so even if no one else has done it, I will gladly be the first one to document it.

 

ive never seen anyone test any of this stuff, i'm sure its been done, but nobody has shared it.

maybe you make a headlight duct out of some scrap stuff and see how it works? the 99+ setup, and "cheap bastard" setups work too

 

I came across a thread that has some great pictures if something that is along the same lines as my idea.
https://www.rx7club.com/3rd-generati...intake-701650/
The pictures show an intake that more so "suggests" the air coming through the headlight duct to go into the large turbo filter.
I won't go this route but it definitely gives me some information I needed about the intake duct.

I was getting concerned that the duct through the headlight might be too restrictive to supply enough air to both turbos, essential choking it out. This wouldn't be viable at all and not currently having the parts in my hands to check diameters and things, it had me a bit worried. I will check for sure in the future once I receive the parts but my current idea is to have a pipe close to the diameter of the intake box (currently leaning toward the Blitz Advance due to its shape and size), and then adapting down the size right up to the intake duct.

 

i think you're on the right track, looking at sizing. off the top the "Cheap Bastard" way of using the space next to the radiator, looks really good, and easy

 

this article is worth digging into imo.

https://grassrootsmotorsports.com/fo...k/48999/page3/

tl/dr minor "ram" effect at lower speed (under 200 mph), more about cooler air and reduced restriction.

 

Definitely an interesting read. If anyone has the idea I think this to be some sort of "intense racing intake that increases power" thats not at all my angle. This is more for looks + the marginal benefit of the intake duct bringing in fresh air from outside the car. My logic is: If you want to have a sleek headlight kit with the intake duct (which I do), why not go all the way and utilize that outside air to the maximum. People funnel air through ducting to their brakes, and this seems like a similar application of that air.

As for what I have seen online and elsewhere on the forums, people now a days don't find the H11 kit to be a good headlight set up in terms of their capabilities as a headlight. I have seen others talk about using different style bulbs and things like that or using the EVO-R Sleek kit (not the demon). Which would be best for me, I am not sure. But what sounds simplest would be to get a the fixed headlight kit and use better bulbs. HID bulbs would probably work best for me because my car already has HID bulbs for the pop ups so I might be able to work other bulbs into my wiring easier (maybe). I'd just need to know what size the RE bulbs are in the H11 kit and then find a same size replacement from HELLA or elsewhere.

 

H11 is the bulb size.

 

I was more thinking of the diameter of the bulb in its housing, which I believe to be 90mm or about 3.5 inches. I can confirm this at least for the EVO-R kit. This should be plenty large for the intake and shouldn't cause any restriction due to the diameter of the pipe.

A different hurdle that was brought up to me when going over this with a friend was: where will water go when it rains?
I have to do more research on this but here is what someone else had to say about it on a different forum regarding water entering their intake through a hood scoop:
"The way manufacturers get around the problem of the wet is usually through creating a dead zone where the water will fall out of suspension, then the water is collected and allowed to drain through a tube out onto the ground. If the filter gets a little wet, there's no real issue. A little water getting in through the intake is not going to create an issue. Your engine can ingest and "burn"...a little water without causing issue one.
To create your own "dead zone", ensure you have a box around your cone filter (if that's what you're using). The box provides plenty of space where the air can slow down for a second. This will allow for the water to drop out of suspension as I've suggested"

This might not be as effective as he stated but I will be looking into this more.