Ok i know the flames are gonna come so here goes. I have searched all day on what CAI or WAI to put on the max. I have the GAB know but want to try the real piping. I read that the guys that own the 4th gens get the pipes from Auto zone and Advanced auto and custom make piping by putting certain pipes on to fit the design of the engine bay.

http://forums.maxima.org/showthread....ight=cai+today

i was curious since im sitting at work and i havent seen any numbers in my searches. Waht is the outside diam. of the TB and the MAF. I am going to try the custom piping but not sure on what diam. pipes t oget.

Im waiting for you you soonerfan, ahahahah

 

http://forums.maxima.org/showthread....88#post1829688

 

just buy a berk intake

 

i saw that post but it tells the diam of the air filter opening. I need the O.D. of the TB and MAF. Unless thats right and 3.25 is the od. Anyone else?

 

Im starting to like you sooner. At least you be there in a hurry like superman. Ill trty the ghetto piping and if all else fails berk it is.

 

funny thing...i havent been on here for almost 24 hours. just sat down when you posted.

why dont you just go measure everything on your car?

 

Measuring on your own seems like a viable option here. Aside from that, it's the ID that will affect performance.

 

well i did put the stuff on. Im quick huh. I bought the pieces at autozone and it cost about 80. It feels just the same at the low and mid but at the top end it pulls a bit harder. Has a mean yell to it once it climbs the rpm scale. They are all spectra parts and the #s are
8711
8718 6 inch intake tube
81413 mass air flo adapter
8771 coupler
8771 coupler
8707 threaded intake tube for pvs to valve cover

I did not need the 8707 so i will bring back
i did buy the 8711 which i think is the nipples to attach the pvc hose. I cut i hole in the 6 inch pipe and tthen put the gromet in the hoe and the nipple in the gromet.
the mass air flow adapter need to have the bolt holes enlarged to match the max MAF. Took me about 45 minutes to put on. ill get some pics on my homepage tomorrow when the sum is out. So far the testdrive i took it on was pretty good . Now want to see how daily driving is and what happens to MPG.

Oh and i wasnt being sarcastic Sooner i am starting to like you

befroe i forget tyhe 3 in couplers needed to be persauded on to the TB and MAF. Nothing some wd40 couldnt help. its a liquid sledge hammer.

 

Now you must rid the bottleneck MAF housing

 

wd40 and the MAF good mix

but anyways what filter did you use?
didnt see it mentioned just curious

 

72mm throttle body, 3 inch OD on the pipes

 

wait...im still confused on the filter u used.

Edit: oh and did u put pics up on ur homepage?

 

just buy a berk

 

no pics up yet. The wd40 was just to get the pipes together. Everything was cleaned and wiped down before putting together. The filter is a cheapy right now cause no store here has a apexi or kn. It was a spectra cone filter. Will i see a difference gonig from the cheapy filter to these:

a k and n filter or

http://www.envyperformance.com/index...TOKEN=89457041

 

Whats wrong with the MAF housing?

 

read the berk thread

 

Were's this best place to pick up the Berk? Best price.

 

http://www.berktechnology.com/

 

Cool, thanks for the link. Now I just need to figure out if I should pick up the Berk or B&M first.

 

ya i think i saw those spectra filters up at autozone the other day. Some of em are crazy looking and downright enormous and expensive for an autozone filter (like $50). I wonder if there any good cuz the filter im using right now is a piece.

 

I must have the special edition.

Measure it again using vernier calipers.

 

Oopsy, make that 80mm for the coupler over the TB

 

I have an 82mm I.D. MAF lying around.

Hopefully Bryan can get me a 76mm I.D. midpipe and MAF adapter. I plan on using the stock box to keep things quiet.

 

what would happen if we made the maf and the midpipe one piece at the proper diameter. Make it about 12" long, obviously making sure that the PCV hose is behind the maf sensor? Make it the same diamater as thr throttle body. Would the maf sensor compensate for this? Or would tuning be the solution?

 

Tuning would be necessary. When I installed it, the darn thing stumbles all over itself (turbulence) until I get about 3k RPM or so.

 

What setup are you using? Stock airbox with bigger MAF? I'm currently using a berk copy made of aluminum. Not sure on the diameter. I think I used the injen ID since that's what I had originally. any idea as to the gains we could get? I was think I could custom make myself a nice aluminum piece. Since I'll be tuning soon I'm wondering if it's worth it or not

 

Hmmm, if you could get your hands on a ~76mm ID Al tube, I'd buy it from you. Just need to add the PCV breather tube though.


Been doing some studying on fluid dynamics and mathamatically, it should help (gains)

 

I can make it any diameter I want. I'd bore it out from solid aluminum. Or a tube with say 1/2" thick wall and machine it inside and out. I can tig weld the PCV tube as well. I'd just have to figure out how to attach the filter, or maybe go up in size. Do you think length has any significance? I made my berk copy 7" long and I think the MAF is around that as well. (only a wild guess as I havent been under the hood in a while) I'm thinking the OD could be 3 1/4 with an id of 3.00 " Then use any filter with 3 1/4" opening. No MAF adaptor. Use the stock accordian piece at the tb which is also 3 1/4. No couplers and only 3 gear clamps.

 

I don't think length would play much of a role. By definition, longer path to the cylinder (air) this would aid in midrange torque. But in this case, I'm not 100% sure that it would apply here. The significance it would play here would be distance from the engine, directly affecting IAT's (intake air temps) If possible, I could get you dimensions for the midpipe to use with the stock box and if you can fabricate it, I would pay for that and the labor.

 

I'm working on a solidworks sketch as we speak. I assume it would be wise to keep the maf sensor about the same distance away from the TB as stock. The only hard part to this will me machining the opening for the sensor. I've never had one out yet so I don't know what the opening looks like.

 

 

Ok, next question, that setup looks like it will move the sensor farther away from the centre of the housing? Is that going to be a problem? Or is there a way to adjust the "depth" of the sensor?

BTY looks really nice, but man it looks huge!

 

Ok i posted the pics here is the link directly to the page

http://www.cardomain.com/ride/2547814/4

 

I just finished my version of a WAI today using leftover OEM parts, and a rubber coupling and universal cone filter from AutoZone.



I used a leftover piece of aluminum stock to make a bracket.

w/o going into too much detail, I cracked my MAF housing bolt flange and am now on the seach for a replacment. Luckily I was able to still get it all to come together with no leaks, etc.

Sorry about picture quality. Our digicam took a dump yesterday so I used a el cheapo that was sitting around from a few years back.

 

buy a short ram intake.

it's what your after, not a bootleg PR CAI.

 

Confused. This is a thread about WAI's. Where did the discussion about a CAI come into the picture. As far as I am concerned what we have accomplished was to build a short-ram intake.

My goal was to have a WAI that looked as OEM stock as possible and was quite cost effective. I feel, with the exception of the filter, I have accomplished just that. Total cost for me was around $30.

I am sure jeff5347's goal was to make a low-cost, yet effective WAI and after seeing the pictures, it appears he accomplished just that as well.

Don't know about others, but I'd rather fabricate my own mods when possible. Makes me feel good that I was the one who did it and it worked.

 

I thought the same thing. But in that particular housing, it sits in the center. I suppose it's an optical illusion.


Here's a very interesting thread about the subject.
http://forums.maxima.org/showthread.php?t=455422

 

cool, have you figure out how long to make it?

 

Not yet. Was out of town this past weekend. But I now have more daylight to play after work. I will have all the necessary measurements early this week.

 

cool, pm me with the details if you want.