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Old 08-06-2012, 05:06 AM   #1
Fat Black Pig Sac
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Member#: 247911
Join Date: May 2010
Chapter/Region: BAIC
Location: Sacramento , CALI
Vehicle:
2005 obp WRX
color: HUMMER H2 WHITE

Default DIY aggressive rear diffuser...under 100 bucks!!!

I was gonna make my custom diffuser a long time ago, never had time. Finally I found some spare time last week. I was working on it for about 5 days, 5-6 hours after work, put about 30 hrs into making it and using basic tools and materials that can be found at any Walmart such as:
- plastic board (1/4" x 48" x 72") $20
- 1gallon of fiberglass resin - $40
- set of brushes - $10
- 2 cans of truck bedliner - $15
- hardware - $5
- brewskis

I used 3 5/16 long bolts to mount my diffuser to the spare wheel compartment and 6 screws to attach it to the rear bumper.
The diffuser is very sturdy and fits like a glove.
All under 100 bucks.
I might be making another one, with differently shaped fins....not sure.
Anyways, enjoy the pictures!
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Old 08-06-2012, 05:08 AM   #2
Fat Black Pig Sac
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Join Date: May 2010
Chapter/Region: BAIC
Location: Sacramento , CALI
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2005 obp WRX
color: HUMMER H2 WHITE

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Last edited by Fat Black Pig Sac; 08-06-2012 at 05:23 AM.
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Old 08-06-2012, 05:08 AM   #3
Fat Black Pig Sac
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Member#: 247911
Join Date: May 2010
Chapter/Region: BAIC
Location: Sacramento , CALI
Vehicle:
2005 obp WRX
color: HUMMER H2 WHITE

Default

after applying bedliner






Last edited by Fat Black Pig Sac; 08-06-2012 at 05:23 AM.
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Old 08-06-2012, 05:09 AM   #4
Fat Black Pig Sac
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Member#: 247911
Join Date: May 2010
Chapter/Region: BAIC
Location: Sacramento , CALI
Vehicle:
2005 obp WRX
color: HUMMER H2 WHITE

Default






Last edited by Fat Black Pig Sac; 01-10-2013 at 08:31 PM.
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Old 08-06-2012, 05:11 AM   #5
Fat Black Pig Sac
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Join Date: May 2010
Chapter/Region: BAIC
Location: Sacramento , CALI
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2005 obp WRX
color: HUMMER H2 WHITE

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INSTALLED!!!!!






Last edited by Fat Black Pig Sac; 08-06-2012 at 05:24 AM.
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Old 08-06-2012, 05:11 AM   #6
Fat Black Pig Sac
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Location: Sacramento , CALI
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2005 obp WRX
color: HUMMER H2 WHITE

Default






Last edited by Fat Black Pig Sac; 08-06-2012 at 05:25 AM.
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Old 08-06-2012, 05:13 AM   #7
blessthekellen
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Chapter/Region: W. Canada
Location: Alberta.
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MY98
WRX

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Doesn't look too bad actually.
Kudos on the DIY.
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Old 08-06-2012, 05:29 AM   #8
domestic_abuser
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Looks crazy good!
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Old 08-06-2012, 10:08 AM   #9
awd1927
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CWP

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Is the part that tucks under the license plate vinyl? If it is how is it holding up near the exhaust ?
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Old 08-06-2012, 10:19 AM   #10
Burks569
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SWP

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Awesome looking DIY and still very open to make small changes so that everyone that would do this could add their own personal touch, love it dude.

Off topic:wheel/tire/alignment specs?? those are sexy AF and looks to be the exact stance I want for my 07.
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Old 08-06-2012, 04:27 PM   #11
ScoobyBlack
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'Identity Crisis'

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Subbed for a future project. Looks really good; thanks for sharing!
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Old 08-06-2012, 04:30 PM   #12
Bolster
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Wow. Great work!
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Old 08-06-2012, 04:31 PM   #13
lastsnare
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Location: Buffalo, NY
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2013 BRZ GBS, 2000 2.5RS

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very cool, I might attempt something like this.
was the plastic board from a particular department ? (if I understood correctly, this came from Walmart like the rest of the materials).
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Old 08-06-2012, 04:34 PM   #14
FlannelWagon
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Location: Edmonds Washington
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2007 Fxt
Urban Grey Metallic

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would be great to use as a mold, and do one in Fiberglass, or Carbon.
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Old 08-06-2012, 05:13 PM   #15
WRXSteye20008
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2014 Sport Premium
Past: 351awhp Sti

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That is really cool, but not much of a DIY without dimensions
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Old 08-06-2012, 05:21 PM   #16
ScoobyBlack
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Location: Billings, MT
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3in1 04/06/08 STi
'Identity Crisis'

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Quote:
Originally Posted by WRXSteye20008 View Post
That is really cool, but not much of a DIY without dimensions
Printable template, please!
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Old 08-06-2012, 09:51 PM   #17
05subysti
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RWD, 18x10.5/12.5s

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I'd pay $100 for that! Lol
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Old 08-06-2012, 10:04 PM   #18
Dmochowski
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305whp/360tq TSM tuned

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nice work! looks great.

Hey what kind of wheels are those they look great too!
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Old 08-06-2012, 10:10 PM   #19
Dailoh
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Black

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looks amazing
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Old 08-06-2012, 10:14 PM   #20
07STi TX
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satan's white pearl

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I smell money making if you choose to make some on the side i'd buy one
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Old 08-06-2012, 10:35 PM   #21
Terrible Juan
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2007 OBP WRX VF43'd

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Nice diffuser.

I love your rear fenders in that last pic. Hope your stance was worth it.
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Old 08-06-2012, 11:25 PM   #22
HinshawWRX
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GT3 (Currently on Fire)

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Quote:
Originally Posted by Terrible Juan View Post
Nice diffuser.

I love your rear fenders in that last pic. Hope your stance was worth it.
While the piece doesn't look horrible, the bent to crap fenders and dumb looking wheels and specs ruin the car. But they are from Cali so it's expected.
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Old 08-06-2012, 11:54 PM   #23
lastsnare
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Join Date: Jan 2008
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Location: Buffalo, NY
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2013 BRZ GBS, 2000 2.5RS

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Quote:
Originally Posted by HinshawWRX View Post
While the piece doesn't look horrible, the bent to crap fenders and dumb looking wheels and specs ruin the car. But they are from Cali so it's expected.
Hey, be nice. No need to criticize his car because it's different from what you would do to your own.
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Old 08-06-2012, 11:58 PM   #24
DudeCris
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Location: Philly
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Aspen White

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Quote:
Originally Posted by HinshawWRX

While the piece doesn't look horrible, the bent to crap fenders and dumb looking wheels and specs ruin the car. But they are from Cali so it's expected.
Kinda harsh on the opinion man. As for the diffuser great job looks like it came out clean and IMO sick set up for the car.
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Old 08-07-2012, 12:09 AM   #25
sunyster
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Looks sweet man for a DIY. Definitely will try one day. Nice car btw
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