since i didn't want the engine to injest hot-under-the-hood air, i was wondering how i can increase outside air into the stock airbox as i was putting in the k&n panel filter......then, BAM!, the answer was right in front of me, literally!

i took out that "power duct" piece and repositioned that rubber sealer onto the airbox itself. opening to stock airbox almost doubled!

i also removed that funky tube/chamber that's connected to the bottom of the airbox. now there's just a hole at the bottom of the airbox

lastly, i also took a nut and used it as a washer to position the stock airbox approx. .25 inch higher to "catch" more incoming airflow. it's the nut on the right hand side as you're looking in/onto the engine that holds the stock airbox in place.

result? this intake setup roars, and i do mean roar! best of all, more outside air to engine! you can hear it at this saturdays meeting at performance nissan in duarte(so-cal).
just thought i share with fellow G'rs......

04 Black Sedan 6mt / front blinker mod, z tube+k&n panel filter / 18" r/h c2s w/khumos 235/40zr18 / pre-muffler, what pre-muffler?


Less is more, unless your modding......

 

Any pix?

XMLM

 

I look forward to seeing it on Saturday. Sounds interesting...


BLKSNAKE - '04 G35 Coupe
Check out my hidden sub! [img]/w3timages/icons/laugh.gif[/img]

 

nope, no pics, just picture, if you will, the stock airbox with the "power duct" piece removed. it's just basically a bigger opening to the airbox, that's all.

04 Black Sedan 6mt / front blinker mod, z tube+k&n panel filter / 18" r/h c2s w/khumos 235/40zr18 / pre-muffler, what pre-muffler?


Less is more, unless your modding......

 

If you have a pic after the mod, please post.

Have you noticed any change in your gas consumption?
What about perceived torque etc?

2003 G35 Black Sedan

 

thanks to g35Mark, pics are in here:
https://g35driver.com/forums/showfla...ed&sb=5&part=1

04 Black Sedan 6mt / front blinker mod, z tube+k&n panel filter / 18" r/h c2s w/khumos 235/40zr18 / stock airbox mod / s-teins / crank pulley / pre-muffler, what pre-muffler?

[image]url[/image]

 

nice work.

damn, so I just wasted $200 ordering a Z-Tube & Popcharger!

=P

 

maybe not, z tube + popcharger has been dynoed to add a few ponies.........i just wanted more outside air via the stock airbox.

04 Black Sedan 6mt / front blinker mod, z tube+k&n panel filter / 18" r/h c2s w/khumos 235/40zr18 / stock airbox mod / s-teins / crank pulley / pre-muffler, what pre-muffler?

[image]url[/image]

 

no concern if it provides an easy way for water to get in in case you drive through a puddle of water during a rainy season
Just wondering? maybe I am just totally wrong but in case


2003 G35 Black Sedan

 

look at the 3 pics. i would only worry if that puddle of water is headlight level deep. keep in mind that this basically opens up the stock airbox, that's all..........if anything, quicker throttle response accompanied with a nice growl.

04 Black Sedan 6mt / front blinker mod, z tube+k&n panel filter / 18" r/h c2s w/khumos 235/40zr18 / stock airbox mod / s-teins / crank pulley / pre-muffler, what pre-muffler?

[image]url[/image]

 

Please those who have done this mod post your observations
Any more HP gain?
Any change in the MPG?
Thanks!!

2003 G35 Black Sedan

 

The bottom piece that you removed from the stock airbox is the resonator chamber. Airflow is designed to flow into the chamber. By removing the resonator, you may actually lose some airflow into the actual filter and intake tube since air will now just flow into the hole into the bumper area. IMO, I'd plug the hole instead of leaving it open.

 

I've done this and am planning on plugging that hole.

One question, is there a possibility that taking off the power duct would increase the amount of "hot air" that gets in, thus negating any performance gains from "more air"?

2004 Diamond Graphite Infiniti G35 Sedan
Z Intake Tube
5% Tint
ZAINO

 

I don't think so, at least when you are moving. I have the
Stillen HiFlow AirBox. It is not completely enclosed. When
you are moving foreward, the rush of oncoming air should
prevent any engine hot air from moving foreward and into
the air box. That's just IMHO

2003 Twilight Blue 5AT Sedan, sunroof,
Graphite Leather, splashguards,
12 wire Hyper-grounding kit,
350Z intake duct, Stillen Hi-Flow Airbox
Underbody rear diffusers, Drilled aluminum pedals

 

with that rubber sealer that was on the powder duct piece now on the airbox, then, imo, the amount of hot air injested while car is not moving would be minimal. the oem setup has air being sucked in from the front of car, i just made that part bigger, that's all. i wouldn't worry too much about the quarter size hole at the bottom.....

04 Black Sedan 6mt / front blinker mod, z tube+k&n panel filter / 18" r/h c2s w/khumos 235/40zr18 / stock airbox mod / s-teins / crank pulley / pre-muffler, what pre-muffler?

[image]url[/image]