# How-to: Make Your Own High Flow Stock Air Box

**URL:** <https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193>\
**Category:** SON240sx Automotive\
**Created:** [October 22, 2003, 1:27pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193 "2003-10-22T13:27:53Z")\
**Posts on this page:** 20\
**Page:** 2

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [October 23, 2003, 7:45pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/21 "2003-10-23T19:45:11Z")

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> [@Black240Matt](#):
>
> i cut the bottom off my air box back when i got it, so all thats left is the part that holds the air filter.

How quick does it durtty up?

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**Author:** ![Sweet\_N\_SourSauce](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sweet_n_soursauce/32/5490_2.png) [@Sweet\_N\_SourSauce](https://forums.speedlife.net/u/Sweet_N_SourSauce)\
**Post date:** [October 23, 2003, 7:50pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/22 "2003-10-23T19:50:15Z")

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i’ve heard that the engine revs quicker and sounds louder, any truth to it?

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [October 23, 2003, 8:26pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/23 "2003-10-23T20:26:05Z")

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To my mod?

Yes it sounds louder because the intake resinator was removed.  
It’s defenatly more REV happy and the acceleration is honestly a large improvemt. Im not saying i gain like 30% more HP but the car does feel more peppy.

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**Author:** ![AnDrEw](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@AnDrEw](https://forums.speedlife.net/u/AnDrEw)\
**Post date:** [October 23, 2003, 9:11pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/24 "2003-10-23T21:11:32Z")

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> [@SHIFT\_SR20DET](#):
>
> To my mod?
> 
> Yes it sounds louder because the intake resinator was removed.  
> It’s defenatly more REV happy and the acceleration is honestly a large improvemt. Im not saying i gain like 30% more HP but the car does feel more peppy.

i wanna try the short intake running where the battery is. Wonder wut that does

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**Author:** ![Sweet\_N\_SourSauce](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sweet_n_soursauce/32/5490_2.png) [@Sweet\_N\_SourSauce](https://forums.speedlife.net/u/Sweet_N_SourSauce)\
**Post date:** [October 24, 2003, 9:39am UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/25 "2003-10-24T09:39:12Z")

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i already have the resonator off, i never notriced a difference, well i’ll experiment this weekend

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**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [October 24, 2003, 9:57am UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/26 "2003-10-24T09:57:58Z")

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> [@~\*IdIoT bOx\*~](#):
>
> [quote=SHIFT\_SR20DET]To my mod?
> 
> Yes it sounds louder because the intake resinator was removed.  
> It’s defenatly more REV happy and the acceleration is honestly a large improvemt. Im not saying i gain like 30% more HP but the car does feel more peppy.

i wanna try the short intake running where the battery is. Wonder wut that does[/quote]

HUGE DIFFERENCE!!!

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**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\
**Post date:** [October 25, 2003, 1:53pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/27 "2003-10-25T13:53:19Z")

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What the hell? Pantyhose air filter? Are you for real Adam? :shock:

I have a spare OBX conical filter. Maybe I should list it in the FS…dunno  
what it’s worth…

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**Author:** ![Original\_Nutta](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/original_nutta/32/5474_2.png) [@Original\_Nutta](https://forums.speedlife.net/u/Original_Nutta)\
**Post date:** [October 25, 2003, 2:32pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/28 "2003-10-25T14:32:26Z")

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> [@Gonad](#):
>
> What the hell? Pantyhose air filter? Are you for real Adam? :shock:
> 
> I have a spare OBX conical filter. Maybe I should list it in the FS…dunno  
> what it’s worth…

$5 and ill take it. Need it for the 323.

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**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\
**Post date:** [October 25, 2003, 3:00pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/29 "2003-10-25T15:00:56Z")

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> [@Kouki\_Monster](#):
>
> [quote=Gonad]What the hell? Pantyhose air filter? Are you for real Adam? :shock:
> 
> I have a spare OBX conical filter. Maybe I should list it in the FS…dunno  
> what it’s worth…

$5 and ill take it. Need it for the 323.[/quote]

$5 and you can kiss my ass. :lol:

I said maybe…dunno if my rice-boy bro wants to use it on his pimpin 91 Escort. Or maybe throw it in my dad’s 98 Contour. 😛

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**Author:** ![Sweet\_N\_SourSauce](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sweet_n_soursauce/32/5490_2.png) [@Sweet\_N\_SourSauce](https://forums.speedlife.net/u/Sweet_N_SourSauce)\
**Post date:** [October 25, 2003, 3:37pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/30 "2003-10-25T15:37:39Z")

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well, i cut the bottom off of the airbox, but i left the backside on so i could run that stock plactic tube from the fender on.

It sounds mean from inside the car, at WOT at 4000k to redline all i can hear is a roar coming from the engine, and the best part is i can’t hear the exhaust leak over it 😃

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<div class="post-metadata">

**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [October 25, 2003, 4:18pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/31 "2003-10-25T16:18:38Z")

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> [@Black Apple](#):
>
> well, i cut the bottom off of the airbox, but i left the backside on so i could run that stock plactic tube from the fender on.
> 
> It sounds mean from inside the car, at WOT at 4000k to redline all i can hear is a roar coming from the engine, and the best part is i can’t hear the exhaust leak over it 😃

YEEEAH EXHAUST LEAKS!!!

I love my exhaust leak. 😛

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**Author:** ![Black240Matt](https://avatars.discourse-cdn.com/v4/letter/b/4bbf92/32.png) [@Black240Matt](https://forums.speedlife.net/u/Black240Matt)\
**Post date:** [October 29, 2003, 9:10pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/32 "2003-10-29T21:10:06Z")

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> [@SHIFT\_SR20DET](#):
>
> [quote=Black240Matt]i cut the bottom off my air box back when i got it, so all thats left is the part that holds the air filter.

How quick does it durtty up?[/quote]

doesnt dirty fast, and gives it a nice deep noise.

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**Author:** ![evilcore](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@evilcore](https://forums.speedlife.net/u/evilcore)\
**Post date:** [November 23, 2003, 9:44pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/33 "2003-11-23T21:44:17Z")

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so… run this down again… with no pantyhose

remove the bottom part of the air box… leaving the filter and the top half of the airbox and the rest of the tubing in place?

how will the filter stay in place?

thanks

* * *

evilcore  
90 black s13

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<div class="post-metadata">

**Author:** ![Black240Matt](https://avatars.discourse-cdn.com/v4/letter/b/4bbf92/32.png) [@Black240Matt](https://forums.speedlife.net/u/Black240Matt)\
**Post date:** [November 23, 2003, 9:52pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/34 "2003-11-23T21:52:10Z")

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the filter is mushed inbetween the top and bottom parts. and u wanna leave all the parts that hold the air box in place.

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**Author:** ![evilcore](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@evilcore](https://forums.speedlife.net/u/evilcore)\
**Post date:** [November 23, 2003, 9:58pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/35 "2003-11-23T21:58:42Z")

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so just remove the piping connecting the airbox to the intake in the fender?

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**Author:** ![prodigy](https://avatars.discourse-cdn.com/v4/letter/p/8491ac/32.png) [@prodigy](https://forums.speedlife.net/u/prodigy)\
**Post date:** [November 24, 2003, 9:27am UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/36 "2003-11-24T09:27:00Z")

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> [@evilcore](#):
>
> so just remove the piping connecting the airbox to the intake in the fender?

That pipe is the so-called “y-pipe” that also connects to the intake resonator below. Take that out, then cut some 1" wide slits inbetween the support lines in the front of the lower section of the airbox. That’s what I did and it made a really big difference, both in sound and throttle response.

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<div class="post-metadata">

**Author:** ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)\
**Post date:** [November 24, 2003, 9:31am UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/37 "2003-11-24T09:31:20Z")

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^^^ Is ghey, thats exactly what I did. THEIF!!!

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**Author:** ![evilcore](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@evilcore](https://forums.speedlife.net/u/evilcore)\
**Post date:** [November 24, 2003, 9:48am UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/38 "2003-11-24T09:48:09Z")

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sweet deal…ill try it out and let you know how it goes

* * *

evilcore  
90 black s13

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<div class="post-metadata">

**Author:** ![evilcore](https://avatars.discourse-cdn.com/v4/letter/e/67e7ee/32.png) [@evilcore](https://forums.speedlife.net/u/evilcore)\
**Post date:** [November 24, 2003, 5:17pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/39 "2003-11-24T17:17:09Z")

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it worked… great improvment on the throttle response… i can only notice a difference in the sound over 4000 rpm as i have an exhaust system

excellent mod all together!!  
thanks guys

* * *

evilcore  
90 black s13

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<div class="post-metadata">

**Author:** ![system](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/2X/b/b7170c8eddc0b95ece6b88172b2f416a08489a45.png) [@system](https://forums.speedlife.net/u/system)\
**Post date:** [November 25, 2003, 1:33pm UTC](https://forums.speedlife.net/t/how-to-make-your-own-high-flow-stock-air-box/80193/40 "2003-11-25T13:33:14Z")

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yay if i was not so lazy i would go and do that right now

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