I just made and added the upper intake piece to my max. I did notice a increase in my low end power that was really lacking before. Very nice. I also notice at idle, I can actually hear the air being forced into my pop charger now. As far as other noise, when accelerating, the upper intake piece amplifies the sound of the pop charger. I really like it and I think I've scared a few minivan drivers Its a really nice deep sound, not ricey at all. I also went all out and bought a K&N breather filter for $24 instead of the cheaper no-name one. Really nice and cheap mod!

 

tell us if your gas mileage sucks *** ....also get some pics up f00 !

 

What did you make it out of?

 

I used the instructions here http://www.drwebdesign.com/mymaxima/upperintake.html

If I can borrow a digital camera I will take pictures. Its doubtful that I can get a hold of one though.

 

I still get 400+ miles to the tank befroe the light turns on, this past fill up I got 425, which translates to about 25.4 MPG. Mileage doesn't suck at all, but maybe you have some kind of leak or something, check it out.

 

wow... 400+ miles... i average 320miles (1/8 tank left) with city driving...

 

I am running a stock intake on my 98 Auto GXE. I get between 27 and 30 MPG. I drive 85 miles per day on a good day. Does an upper intake mod drop your MPG?

 

A few weeks ago I drove down to my brothers house to visit, Chicago to Oklahoma City. While I was down I installed a Hybrid intake. I got 23.5 mpg on the way down and 25.5 on the way back. Since then I have seemed to notice, (this is just guessing I have not actually put it to paper and pen), that with my Hybrid I get better mileage than before while driving normal . Although when I am driving with high RPM's consistantly I am getting worse mileage than before. So it can be both ways.

 

is idle loud? or just like some air going into the intake voice?
do you still have that 1000-3000rpm stock sound/when cruising?

 

where did you get your k&n and filter from, 24 seems like a good price, i am about to start my intake project, and the k&n at autozone is 49 and change, so let me knwo where u got it from

 

nope u can't hear the intake whern the car is idling or cruising, u only hear it while accelorating

 

Do you need a pop charger for this?
Thanks,
Paul

 

I made my own intake just this last weekend. At first it was just a pop-charger. I fabricated a maf adapter with venturi out of some lexan, and put on a Ractive K&N rip off double cone (same as JWT or Stillen, just the end of the filter has an inverted filter element inside). That sounded great and helped with the top end a bunch. And last weekend, I finally finished it off. I built a pipe from the throttle body to the maf sensor using fiberglass and aluminum. It flows smoothly from the 2.5" throttle body to the 3" MAF sensor, as opposed to using a silicone coupler that steps up/down in diameter. And let me just tell you guys something, it is ridiculous. Dyno between baseline of stock intake and this custom intake is a peak difference of 12hp at the wheels. And gains are throughout, which means, the so-called lag of the pop, does not exist on this intake. It looks ghetto right now to me because the outter tube is raw fibreglass and polymer resin, but according to my buddy, it looks awesome, because it has a composite look to it. The best part is, the 4 layer fibreglass is an AWESOME insulator against heat. Everywhere I go, people want to race me if they hear it under full load. And afterwards, they want to know where I got it. When I tell them I made it, they want to buy it lol. I've already sold 3 intakes to civic owners I fabricated myself for $100 Canadian each. The Maxima ones are gonna cost a bit more though just because of the time required to properly make a tube that goes from about 2.5" to 3" with about a 15 degree bend in it, and two, if not three nipples for idle air meter, crank case, etc. Currently, it takes about a day to make each intake.

 

I can hear mine when its idling. Sounds like the end of a vaccuum cleaner hose, that hissing sound.
I have the same homemade intake setup.

 

You got any picts of it? Sounds like something I was gonna do on my own only with PVC.

 

Don't bother with the PVC. I tried that route before. Problems you will run into are, the bend and the 2.5" to 3" problem.

No pics yet, but I can provide sound files that will just make car enthuses jiz. I can make some recordings tonight, and e-mail them to anyone interested, or if someone wants to host it, as long as I know it won't be used without my permission, I'd be cool with that. I can do some in car, and out of car recordings.

 

recordings sound good!

 

me me me
dennisk@rogers.com

I got ractive filter right now with maf adapter, want to do midpipe!

 

where did u get the materials sin? I'm in ontario too

 

The aluminum I'm not sure about, it was just laying around in my buddies garage, I'm assuming you could find it at a hard ware store like Home Depot. As for the fibreglass, it is the kind used to repair auto bodies. The filter I purchased from a fob mall. The ring clamps I had laying around, or reused. The breather filter, I bought from Canadian tire. And don't waste your money on those K&N type ones. I bought a proper guaze breather filter with a bit of rad hose for about $5 as opposed to $10-20 for the K&N style ones. The lexan I purchased at a store downtown my cousin recommended for assorted hardware.

 

I got ractive filter on right now with no mid pipe sort of thing
do you think your design will produce a lot more hp than this?
http://www.drwebdesign.com/mymaxima/upperintake.html

 

I don't know about your setup because it sounds like you don't have a velocity stack. Like I said, 12hp at the wheels, which means quite a bit at the engine. Compared to just the filter, my buddy was like when he both heard and felt the difference in and out of the car. I have a bad recording where for the first time he heard it out of the car, you hear him say, "Holy ****! That's Loud!" It was such an intense experience for him, he forgot to stop the tape and when he got into the car, his hands were shaking. When we went cruising, as I down shifted at a light, these guys in a civic wanted to race me. After I absolutely spanked them, they swore I had nitrous. They kept saying "Man, you must be on the bottle." I just smiled and said, "No, you just think civics are fast."

Anyways, I'm gonna head out now, and do some recordings. They aren't going to be very good because my buddy is in the recording studio tonight and borrowed my minidisc recorder, so all I have is my little Sony Mic'nMicro recorder I use every now and then for lectures. Then, I have to play and mic it to my computer. So they aren't going to sound very hi-fi, but they'll give you a good idea of what it sounds like.

 

heres my setup right now, I haven't take the intake resinator out yet but I plan to soon
http://images.cardomain.com/installs...65_33_full.jpg

did u go to the maxima/cattman meet this sunday?

if you got icq, icq me because I have a quicktime file with my run wiht ractive filter.

 

For those of you that want them, please e-mail me or leave your e-mail in a post. I appologize for the bad quality, but at the closest point to the mic when doing the outside recordings, I was overloading the mic, so it get's very crackly. There are two recordings from outside, one from inside. I just wish the mic better represented the low frequencies, especially the resonance. BTW, besides the custom intake, the car is otherwise stock, and runs about a 14.7-14.8 in the 1/4.

 

You should have the recordings by now.

 

just checked, I don't/can't put a velocity stack on my filter, does this mean mine will be quieter than yours after midpipe/your pipe?

 

Yes you can. Mine is made from three pieces of lexan. Together, they form a shape similar to the end of a trumpet. If formed, they will not fit into the filter, but separately, they can be manouvered into place, and glued together. I have also successfully made them from silicone, similar to the silicone couplers. It was shaped using heat and stretched out, then glued to the inside of where the intake meets the adapter.

BTW, did you get a chance to hear the wav files yet?

 

if I just add the midpipe you added will it sound like yours?

wow your car sounds badass!!!!!!

 

It depends. I have never heard another moded maxima besides mine, so I can't say from experience. All I know is, my engineering buddy used some programs to design the shape. The funny part is, I figured a perfect circle would be the best shape at the slight bend, but the program disagreed. According to it, the best flow pattern would have a slight ovalling at the bend. Go figure! My buddy tried to explain it to me, it has something to do basically with the way the air reacts to the bend.

All I know is, those using an upper CAI pipe that use a silicone reducer to couple the aprox 2.5" throttle body to the 3" pipe cannot possibly flow as well as my design. What's worse, the kink in the coupler, and all the joints where silicone tubing joins parts such as the pipe to the maf sensor aren't being taken into account. My intake uses aluminum lined interior for shape and smootheness on the inside, and 4 layers of fibreglass and polymer resin for strength and insulation (it is about a half inch thick layer of fibreglass). There are no soft connections. None are needed because the bend is built into the pipe. Yes the Weapon R has a bend built into the pipe as well, but it still uses more joints. The pipe is SO stiff and strong, it doesn't require any other support beside the connection to the throttle body. It is coupled to the throttle body by sliding the aluminum interior over a rubber lined throttle body lip, with the interior of the lip aiding smoothe flow. Similarly, the large end slides over the rubber connection that comes with the stock MAF sensor

I can't say mine is louder than the hybrid or the weapon R or any other similar intake. In fact, I couldn't care less. I care about flow, resonance, and attempting to achieve a ram effect similar to the 3.2 Type S engine's intake, which is what mine does, which is why I wish the resonance was better represented by the recording.

 

When are u gonna start making them i would like to try it. how much for it and how soon can i get it

 

Hey guys, I'm new to this intake thing and I have a few quick questions....

I started making my intke last night and completed the whole thing minus the cone intake on the end. I replaced the center piece (resonator?) with the new tubing, but left the stock air box on because I have yet to find the right cone filter.

So my first question is this: What do I do with the wiring harness that is on the stock air box? Will my new cone filter come with a connection? Do I just leave it disconnected? (Doesn't sound like a good idea)

Second question: I modified a little breather filter to fit, but couldn't find the right cone for the end (after the MAF) (the one I found had a clamp fastener, and it looks like I'll need a filter with four holes for the bolts. Where do you recommend I find the filter? I would like to finish this tonight, so I can hear that growl, but I can't seem to find the right filter.

Thanks in advance!!

 

Damn you man, I thought I was done with the Hybrid intake mod and now you come with this? Show some PICs, ad if you can still make 'em, I'd be very much interested

DW

 

what y ou need is 3 inch adapter...the filter doesnt bolt directly onto the MAF....you can get one from some place for $13 or somethign like that...search around, i cant remember exactly where right now

 

just to let you guys know out intakes at frankencar are finally out AND are on sale for 55 shipped. powdercoated and includes all the connectors you need to connect it and a new hose from the IACV. i'll update the site tonight.

 

So we would only need to buy the filter? I finally finished mine, but I'm not 100% comfortable with the connection, so I might be changing it in the NEAR future.

 

the midpipe for 55 includes the midsection of the intake, then you would need a filter and a MAF adapter.

 

Okay, that makes sense. Thanks Steve.

 

The following e-mails have received not so great sound recordings of my intake:

dennisk@rogers.com
tbnismo@aol.com
El_capitone@yahoo.com
kehops@videotron.ca
jeanf.leduc@hrdc-drhc.gc.ca
dwapenyi@nermy.com (New addition June 13th)



If you would like to receive a copy, just e-mail me.

As for production and pricing. I'll need about month to get things going. I'll need to look into having the aluminum pipes bent at a faster rate, and only then will I have an accurate number on cost. Expect the price of the pipe alone to be between $75-100 Canadian, $45-60 US. But until I get more people interesetd, i.e. 20, I probably won't go through with this project just because of the initial start up costs for the aluminum bending. And I know I won't get those numbers if I don't provide pics, which I do not have yet. Another killier is that I will be out of town for a week next week. Going to the Bonnaroo Music Festival!!! www.bonnaroo.com Check it out guys, I'm sure some of you are going to be there.

 

First off, I think I'm gonna make 2-3 again and sell to Maxima owners locally like I have been doing lately with intakes to the race crowd here in Toronto. If they like em, and there is more interest, I'll get serious and produce a bunch. So far, I've sold about 5 intakes. They range from Civics to Maximas. Hopefully, they will be org members, and hopefully they'll like my intake enough to give positive feedback, and if that's the case, and more than 20 or so people are interested, I'll make about 100 of them. And like I said, I'll be out of town for a week next week, so I won't have much time to work on it for the next two weeks or so. And that will only happen if there is enough interest in it.

 

RE: Bonnaroo

I've got a friend that's going, and from what says, we'll be lucky if you still remember how to make the intake afterwards.

I wanted to join him but he said it's all sold out.

Let me know when you've got some pics and are getting serious about making these things... I need an intake and yours sounds good to me!