2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Check out my custom intake box.

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Old Sep 19, 2003 | 10:21 PM
  #1  
13bpower's Avatar
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Smile Check out my custom intake box.

Made this sucker with sheet metal, duct tape, foam, snips, and cardboard for a template.

I have noticed a huge difference when the car is warmed up. The normal power loss from "heat soak" is gone. Great way to get some more power out of your car for very little money.

It seals up with the hood everywhere except right above the stock inlet. I plan on sealing that up soon. The fresh-air headlight cover is now very functional.
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Old Sep 19, 2003 | 10:24 PM
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From: Laredo, Tx
Nice


Santiago

PS- Look at my sig!
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Old Sep 19, 2003 | 10:52 PM
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ive been seeing a lot of ppl all the sudden making thier own box

wahts up is sheet metal cheep now? lol


looks good
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Old Sep 19, 2003 | 11:43 PM
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That is Ghetto-Fabulous!!
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Old Sep 19, 2003 | 11:44 PM
  #5  
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From: Laredo, Tx
Originally posted by Pinfield357
ive been seeing a lot of ppl all the sudden making thier own box

wahts up is sheet metal cheep now? lol


looks good
bsst! they are making excusses to not buy the best lol.


SIG
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Old Sep 19, 2003 | 11:46 PM
  #6  
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From: Kicking down doors in a neighborhood near you
Originally posted by introVert
That is Ghetto-Fabulous!!
Hell ya it is I love it when people take whats around them and innovate their own stuff. Good Job!
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Old Sep 20, 2003 | 01:13 AM
  #7  
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I call it "Ghetto-fast". The best cost to HP ratio of any mod I've seen. Cost me $0.00 dollars. It was made of all things that were lying around the garage.
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Old Sep 20, 2003 | 01:19 AM
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are all those gonna last ?
i mean the engine bay will actually get pretty hot
u sure that duct tape not gonna melt

that is good idea but i'd have use different material
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Old Sep 20, 2003 | 02:02 AM
  #9  
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Originally posted by sub9lulu
are all those gonna last ?
i mean the engine bay will actually get pretty hot
u sure that duct tape not gonna melt

that is good idea but i'd have use different material
Ya that duct tape might get a little krusty after a while. Its a hell of a start tho. Consider me inspired!!!
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Old Sep 20, 2003 | 03:15 AM
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Wait a second... Isn't the s4 MAF mechanical and it uses gravity? So having it on it's side or upside down would be bad?

Can someone chime in on this?
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Old Sep 20, 2003 | 03:53 AM
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Where I come from that is called Polish, but I am polish and love it. Duck tape solves everthing. Keep up the good work.
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Old Sep 20, 2003 | 10:34 AM
  #12  
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Originally posted by jsotelo
Wait a second... Isn't the s4 MAF mechanical and it uses gravity? So having it on it's side or upside down would be bad?

Can someone chime in on this?
Yes that is true but when I intalled our prototype Cold Air Intake I had the AFM i place like that. I don't think there is REAL BAD problems that come of it but it still should NOT be like that.

Santiago

Check out the sitg
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Old Sep 20, 2003 | 01:04 PM
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Well the guy is creative, I'll give that!
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Old Sep 20, 2003 | 07:38 PM
  #14  
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From: Oahu
Originally posted by jsotelo
Wait a second... Isn't the s4 MAF mechanical and it uses gravity? So having it on it's side or upside down would be bad?

Can someone chime in on this?
3 stright years of driving an s4 rx7 with it set up like that and ZERO effect on the AFM.
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Old Sep 20, 2003 | 07:42 PM
  #15  
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Originally posted by sub9lulu
are all those gonna last ?
i mean the engine bay will actually get pretty hot
u sure that duct tape not gonna melt

that is good idea but i'd have use different material
Melt? how hot do YOU think it gets in there. About a month and nothing has changed. Maybe its just because I live in a mild climate, but my engine bay doesn't get that hot. It's not like its an inch away from the turbo or anything.

You guys can keep on worrying, I will just keep on going faster for very little money
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Old Sep 20, 2003 | 08:02 PM
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Originally posted by 1987RX7guy
Yes that is true but when I intalled our prototype Cold Air Intake I had the AFM i place like that. I don't think there is REAL BAD problems that come of it but it still should NOT be like that.
If you AFM is old and wearing out, THEN it will become a problem.. I wouldn't worry about it otherwise. I can't count the number of people I know who are running their AFM "improperly" and haven't had a single problem.
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Old Sep 20, 2003 | 10:06 PM
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Count one more here.
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Old Sep 20, 2003 | 10:52 PM
  #18  
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There is this aluminum type tape I used. I believe it is used for heating ducts.

James
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Old Sep 20, 2003 | 11:06 PM
  #19  
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AZ-Tech Rotary - I would like to see an exhaust system that makes the RX-7 sound like the G35 Coupe!!!
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Old Sep 20, 2003 | 11:07 PM
  #20  
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huh? ^^
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Old Sep 20, 2003 | 11:23 PM
  #21  
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Yeah, and I want one that makes my seven sound like a Ducati. uh, duh...
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Old Sep 21, 2003 | 01:09 AM
  #22  
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You may not notice the difference from mounting your AFM the wrong way, but that doesn't mean it isn't having any effect. The flap is now influenced by gravity, where is wasn't before, so it's output will be affected.

If you mount it like 13bpower has (damping chamber upwards) then gravity will be pulling the flap closed, so it will measure less air than it would normally and the mixtures will be leaner. It may not be much, but it will be there. On a stock or mildly modded engine this may actually be of some benefit (stock full-load mixtures are quite rich), but on a more highly tuned engine it could be the straw that breaks the camel's back.

Mounting it the other way (damping chamber downwards) will be pulling the flap open, so it will measure more air than it would normally and the mixtures will be richer. On a stock or mildly modded engine this would be pointless and detrimental to performance, but on a more highly tuned engine it might give a little more headroom at the expense of some power.

More importantly I would think, big bumps in the road can cause the flap to bounce up and down. This could cause the engine to stumble or stutter as the mixtures fluctuate rapidly. You may be experiecing this and not realise why, blaming something else instead.

There are obvious packaging advantages to mounting the AFM vertically, so it's safe to assume that if manufacturers have never taken advantage of this then there must be a pretty good reason why not.
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Old Sep 21, 2003 | 01:33 AM
  #23  
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I didn't read the whole thread but I'll ask anyway. Did you remove the weather trim, at the back of the Headlight Cover? Or atleast cut out the contour that the air passes through the opening of the slot? You will not get the full "performance" effect of the Head Light Cover If not done. I ask b'c I did this setup prior to going - East Bear Style!
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Old Sep 21, 2003 | 01:52 AM
  #24  
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thats awesome, I need to make one when I put my cone filter on my car
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Old Sep 21, 2003 | 02:02 AM
  #25  
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From: Laredo, Tx
Anyone know about any good insulation for pipe?

I want to see if insulating materials help our CAI.

Santiago

CAI in the SIG
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