Has anyone here done the DIY stock intake, where you drill some holes to let in more air and maybe add a tube? If so CAN I SEE SOME PICS? I know it would be best to just get an intake but I want to see how it looks and if it actually works, cuz I heard it doesn't make noise like it would if I installed a full after market Intake or CAI.

 

never heard of that, what I have heard of is drilling holes on the connector between the Filter box and the MAF to connect a Cone filter.

 

really, it's cuz I read it in the stickies but the links don't work, so I wanted to see if anyone has done it and how it turned out. pics would be great to...

 

You mean hacking the stock air box? You would bassicaly cut out holes in the bottom part of the air box. Or you can cut a hole on the top part but then youll need to put a filter there.

It should make the car louder (sound a little meaner?), will it help? Im not sure.

 

yeah, I think thats what it's called, I just want to see excatly how it looks like and see if it works for whoever has done it...They type of sound it makes would be good too..

 

Yeah, you're talking about a hacked airbox. I 'hacked' my airbox by drilling a series of holes into the bottom half of the airbox. I don't know if it makes any performance gains, but it does sound a lot nicer during WOT and accelerating.

I also removed the intake resonator so that probably helps too.

 

Do you know how big of holes did you make? and how many?

 

I don't remember exactly what the measurement was in imperial, but the holes I drilled were approximately 0.7 to 1.0cm in diameter. And I drilled a lot of holes.

 

I hated it. It was too loud and annoying after a while.

 

oh really, did you feel any added power? Do you have pics? What type of noise?

 

I have a better solution. No drilling, and it takes about 3 zip-ties.

1.) seperate upper and lower halves.
2.) remove lower airbox (and snorkel and all that other stuff if you want.)
3.) rotate the top 180 degrees (flip over), you will have to unbolt and rebolt
to the maf to do this.
4.) use a few zipties to secure the filter to the box, done.

A few things:

I have a midpipe, with a K&N and mid-pipe this sounded VERY mean (think RWD VQ35)

With a paper filter and stock resonator, it won't be as loud or have the same tone. It may sound a little muffled and motor-boat like.

I would say power gain is probably next to nothing. I think you lose some in the low and and gain some on the top end.

I went back to a ported box (removed 1 wall and part of rear wall of lower box) and I felt some increase in midrange. I did this because running the flipped box will get the filter dirtier quicker than inside the box.

I think it is a great mod because it does not take very long and has very audible results, I have done this to a few other members cars and none of them have switched back. It also is free and easy to switch to and from because you are not cutting ANYTHING.

I will post a picture of the setup so you get and idea.

 

Back when I was on D2 Racing Sport coilovers

 

Oh ok, but wouldn't doing the flipping make the "Check Engine" light turn on and stay on even if you reset it? Pics would be perfect especially of the second one where you took off the side wall. I can't wait,
Thanks!

 

just drill some holes, or cut out the side section of the box facing the fender.............not to difficult

 

why would the CEL come on by flipping it, unless you did not hook something back up?

 

There's nothing to unhook.

No CEL's will be tripped, I would have mentioned it.

 

Looks good, the only reason I ask about the CEL is because I figure that it's getting a different amout of air and it might switch it on, but oh well. Have you ever thought of custom cutting a peice of, like screen door neting to cover the box so it won't get as dirty? looks good either way, Im sure Ill end up doing this mod for sure....

 

i just went to autozone and got an adapter and K&N filter, went home and took off the airbox, put the adapter on along with the K&N cone filter and left it at that.....it sounds awesome at WOT and i noticed a bit of a gain in power.

 

http://forums.maxima.org/showthread.php?t=181899
http://maxima.cardomain.com/ride/370660/7

 

Actually thats a good write up...

 

To filter the filter? The idea is high-flow, you just clean the K&N more often...


Looking at that picture has me thinking of swapping back to that, it's such a straight path for the intake air to take and the surface area of the filter is pretty good. With my setup now the air literally has to take a U shaped path in to the airbox, through the filter, and then through the MAF.

My only problem with this setup is how it will draw mostly rising hot air (from the engine/trans) that is trapped under the hood upon initial acceleration from a standstill. The factory airbox fights some of that, and by pulling air from the underside the air should not be AS hot.

These are moot points once the car is at speed however.

I think I will probably switch back to this setup, let me know if you want me to take pictures of how I ported my airbox and I can put them up before you start making random holes in yours

 

Oh hell yeah, If you start doing your new set up, pics would be perfect. Especially since the ones in the stickie don't work....There must be a way to make a snorkel that hooks on directly to the open flipped filter box, that way you can get straight cold air......or maybe the snorkel can be modified and made straight. Im gonna go to Home Depot or something to see what can be used.......

 

You should run a custom hood scoop with that setup

 

Here's something close to what you are talking about. This was my old intake setup.




I cut a 2" hole onto the filter box, and ran a 2" heater hose thru it. Then I routed the other end of the heater hose thru a 3" cut-out that I had made onto the metal panel next to the battery and down behind the front bumper. I cut the 3" hole because eventually I was going to go with the CAI intake route, which I now have.

 

Now thats actually a perfect idea for this set up, only thing would be is if it rained it would be kinda scary, and to get the scoop or custom scoop hood would be expensive...

 

I know it! Stagnet04, I will snap some pics.

I think I am going to grind off that stupid tab on the box to clean things up looks-wise. Now, the area that I removed from the box (if you are looking at the engine bay straight on) is the left side wall, and part of the rear wall. I left the front so to keep debris and such off the filter as much as possible.

Just keep that in mind but you can cut anywhere, do you have a spare box? If you don't, and plan on doing SOME kind of modified stock intake setup I would suggest getting the K&N and trying the flipped box first.

 

How it was oriented on the car.

Yeah, it was pretty ported....


I switched back to the flipped box tonight and I think I like the tone of this setup the best, the performance difference is very small between the two. I wouldn't say anything is gained or lost, but the RPM's that the engine is making better power shift from midrange to a higher RPM.

 

Hmmm... I'm going to give the flipped airbox a try tomorrow and see how it sounds compared to my hacked airbox!

 

Looks like a good hacked box job to me.. Im gonna do the flipped box job in a couple of days, We'll see how it goes..

 

We are not racecar drivers. You think changing the stock intake will make your car faster? Well maybe like .007 seconds in the 1/4 mile. Oh boy that will make a big difference when you want to get to the grocery store before the huge crowd.

 

In the bottom picture it looks rough because I sanded down some "ribs" that were slowing airflow

 

Isn't that why you mod your car? To show off to the other Kroger customers?

 

Hey man, when I want cheez-its....I WANT CHEEZE IT'S!....

 

i did it for the sound, it sounds freaking amazing

 

Did you "hack" the box or did you do the flip job? Im gonna do the flipped box, but im gonna see if I can customize the snorkel, make it striaght so it hooks up to the flipped box, I think that will help out with the air flow and temp...the way Fr33way has it looks, good and he loves the sound,but, we'll see...

 

I just removed the snorkel, left everything else stock (but have a K&N filter). Sounds pretty good to me.