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Old Jul 13, 2004 | 01:01 PM
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Default home made ram air

I got his idea from a buddy who has a popcharger but mine is a little different. I took the big rectangle piece from a vacuum cleaner hose and mounted it to my grill. Next i took the hose and ran it up through the stock intake whole and then ran it down to my filter. By the way i have an AEM cold air kit. Now i have a nice rush of cold air coming down to my filter. also my intake is now heat wrapped(not in pic). here are a few pics but they aren't very great.
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Last edited by 04evo2; Jul 13, 2004 at 01:03 PM.
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Old Jul 13, 2004 | 01:01 PM
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another
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Old Jul 13, 2004 | 01:02 PM
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another bad one
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Old Jul 13, 2004 | 01:12 PM
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another
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Old Jul 13, 2004 | 01:13 PM
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last one
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Old Jul 13, 2004 | 01:16 PM
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before i installed it i tried just blowing through the length of the pipe and it was alot of air. i can't imagine the airflow at high speeds.
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Old Jul 13, 2004 | 01:24 PM
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I would guess your filter may get wet and dirty and get crap into your engine.

Also, with all the extra bends and tubing it seems like you would be hurting horsepower.

March sells similar ones for the Mustang, and I know that dyno tests show a loss in power, granted this is at 0 MPH so there is no ram effect. I would say you would be better off cutting a hole in your hood and cramming your filter up the hole and design a custom ram-air look.

You will probably be better off going to a regular pop charger IMO


However, it is fun making your own stuff for the car, I do it all the time so if you like it, keep it bro....and who knows maybe it works great!
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Old Jul 13, 2004 | 02:36 PM
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dude the tube is not connected to the intake. Do you think im a idiot. it just runs down towards the filter to send more air to the area of the filter. it is impossible to lose horespower. more and cooler air is getting to the filter!
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Old Jul 13, 2004 | 02:40 PM
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yea i've got the kn typhoon and after having it on for about 6k miles the cone filter is caked with dirt and grime. i could only imagine that crap getting into the engine!! also try not to drive it wot in the rain cause i guarantee youll get water in the engine. one time my whole filter go soaked and had it not been there i can only imagine what wouldve happened.
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Old Jul 13, 2004 | 02:52 PM
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i wont hardly drive in the rain also i clean my filter once a month
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Old Jul 13, 2004 | 11:51 PM
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Originally posted by 04evo2
dude the tube is not connected to the intake. Do you think im a idiot. it just runs down towards the filter to send more air to the area of the filter. it is impossible to lose horespower. more and cooler air is getting to the filter!
Relax man, nobody is calling you an idiot.
Anyways, you want more air to the filter? I did this with my Nismo CAI. Here's what you can do. First remove the bumper. On the driver side there is a black plastic piece (sorry, dont have a pic) that looks like an air deflector. (It's purpose is to divert airflow up to the stock intake air duct which is now useless since your AEM's is down below.) Take it off. By removing this piece, you will expose the filter to more cool air entering the front grille.
Or if you decide on a Popcharger, try what this guy did.
https://my350z.com/forum/showthread....her+popcharger
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Old Jul 13, 2004 | 11:54 PM
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well, the way you routed your intake is very similar to the GruppeM intake.

After 5000km mine was barely dirty and I use it in every weather and road condition.

You just need to be more carefull
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Old Jul 14, 2004 | 06:48 AM
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Default FYI.......

Originally posted by 04evo2
I got his idea from a buddy who has a popcharger but mine is a little different. I took the big rectangle piece from a vacuum cleaner hose and mounted it to my grill. Next i took the hose and ran it up through the stock intake whole and then ran it down to my filter. By the way i have an AEM cold air kit. Now i have a nice rush of cold air coming down to my filter. also my intake is now heat wrapped(not in pic). here are a few pics but they aren't very great.
"Ram Air" produces 0.18psi increase in air pressure at the point of intake at 100mph. And that's when it is properly designed. It will produce 0.76psi at 200mph, and with proper channeling of the inlet into the intake manifold can produce about 1 psi "boost" at the intake manifold at this speed. Slightly beneficial in a race car, not otherwise.
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Old Jul 14, 2004 | 11:26 AM
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Jimmy, good idea but i think you could do better, why not just run a very small peice of tube from your grill straight to you AEM filter? why did you run it all the way up and back down like that?
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Old Jul 14, 2004 | 11:34 AM
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actually I have no doubt that you are losing hp. the whole bumper is a HUGE tube, directing air towards the intake, and other places. by adding that tube, you are limiting the path that the air can take to the intake. the same air will get there naturally with the same pressure or more.

think of a cup of soda. the cup is the area inside the bumper. now take a real long straw and sip all the way down to the bottom, its a bit difficult. now cut that straw so you just barely hit the top of the liquid, sip. much easier. by extending that straw you drew liquid from the same place as when you sucked all the way from the bottom; but with the short straw the liquid could flow up in a "tube" the size of the bumper, with the long straw it had to flow through a very narrow path.

this is imo why CAI's get zero or negative gains. in a normal car your pulling air from the engine bay, a CAI changes this and thus, the negatives of a longer tube are outweighed by the cooler air. but in the Z,Its already pulling air from outside the engine bay. thus as cool as the air the CAI would get, but without the extended tube.
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Old Jul 14, 2004 | 02:46 PM
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Originally posted by Vash350Z
Jimmy, good idea but i think you could do better, why not just run a very small peice of tube from your grill straight to you AEM filter? why did you run it all the way up and back down like that?
i was going to but it got blocked off bya plastic divider. if i soon want to get really serious i might cut it an d make it better. i just through this together in about 15 minutes.
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Old Jul 14, 2004 | 02:48 PM
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Originally posted by ares
actually I have no doubt that you are losing hp. the whole bumper is a HUGE tube, directing air towards the intake, and other places. by adding that tube, you are limiting the path that the air can take to the intake. the same air will get there naturally with the same pressure or more.

think of a cup of soda. the cup is the area inside the bumper. now take a real long straw and sip all the way down to the bottom, its a bit difficult. now cut that straw so you just barely hit the top of the liquid, sip. much easier. by extending that straw you drew liquid from the same place as when you sucked all the way from the bottom; but with the short straw the liquid could flow up in a "tube" the size of the bumper, with the long straw it had to flow through a very narrow path.

this is imo why CAI's get zero or negative gains. in a normal car your pulling air from the engine bay, a CAI changes this and thus, the negatives of a longer tube are outweighed by the cooler air. but in the Z,Its already pulling air from outside the engine bay. thus as cool as the air the CAI would get, but without the extended tube.
actually very littlke air comes from where i put the tube. most of it comes from behind the filter where the plastic underbody stops and the slits in the wheel wel. all in all i am getting more air flow no matter what you say!
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Old Jul 14, 2004 | 07:12 PM
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Dude, you must not realize our engine bay becomes pressurized at speed.

It's been done and tested. The airbox develops just the lightest amount of boost when traveling at 70mph, per the reason these stock airboxs perform so well.

Entrust us, Nissan engineers are DAMN smart.
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Old Jul 14, 2004 | 07:24 PM
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i trust some of you guys but for one i don't have a stock airbox because i think it looks like crap. two i seemed to notice i nice little pull with the install of my AEM, plus i love the sound. all i care about is making myself happy with looks and sound even if it comes down to loosing 1 or 2 whp. And if the engine compartment is presurized at a certain speed then the little airflow thing i made would help wouldn't it?

by the way if anyone is interested i will have dyno results in about a week.

Last edited by 04evo2; Jul 14, 2004 at 07:26 PM.
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Old Jul 14, 2004 | 07:46 PM
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its not that the stock intake cant be improved upon... its good, but not perfect, and can be prettier. which is why pop charger gets more gains than any CAI. it doesnt restrict flow with a longer tube; but it does improve on the stock tubing while taking advantage of the great setup that it already has.
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