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Old 02-10-2013, 03:09 AM   #1
thomasubi
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Default need opinions on rear bumper diffuser

I'm making my own rear bumper diffuser similar to the Golden Eagle Rear Bumper diffuser. Here's a pic of my progress so far. I've made a rough template out of cardboard to just get a feel for the appropriate size. I'll be using 8th inch thick sheet metal for the finished product, again, similar to the Golden Eagle. My father in law is going to water jet cut it at work and he's going to touch it up to make sure everything is even. 4 people have told me not to do it because its not meant for my impreza, or they say that I won't do it right and ill end up messing up my bumper. No faith lol. I need yalls opinion tho, positive or negative. Much appreciated. Thanks in advance!

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Old 02-10-2013, 06:18 AM   #2
airbornesoldier
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why? racecar?
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Old 02-10-2013, 08:58 AM   #3
I WANT AN STI
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why you would want to do that is beyond me.

But hey, go for it. good luck.
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Old 02-10-2013, 09:17 AM   #4
Smurftastic
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To be honest, the only street cars I see with this are Hondas
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Old 02-10-2013, 10:58 AM   #5
thomasubi
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I'm swapping it with a jdm ej20t soon. And good suspension. I want to do this for aerodynamics. And yes all I've ever seen these on are Hondas. It won't be a race car, but it will definitely function. I could custom make an undercarriage diffuser like this one
http://forums.nasioc.com/forums/show....php?t=2466103
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Old 02-10-2013, 11:32 AM   #6
tilegend
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i've never seen a bumper diffuser (golden eagle) in conjunction with an undercarriage diffuser.

wouldn't the bumper diffuser be rendered useless if you effectively seal off the bumper?

as for being on a daily driven car. i'd keep it off.
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Old 02-10-2013, 11:59 AM   #7
AutoPrue
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If you insist on doing it I think it would be a good idea to center it between the lower rear line and the next one up. Your placment would look horrible if you mounted it where you have the cutt out.
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Old 02-10-2013, 12:04 PM   #8
AutoPrue
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Old 02-10-2013, 12:50 PM   #9
m1r4g3
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I vote eeeewwwwwww. The pic above is the first I've seen on a Subaru. Hamster holes aren't as effective as a real diffuser. You can make a decent diffuser for around 100. There is a thread on it
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Old 02-10-2013, 02:12 PM   #10
m1r4g3
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I vote eeeewwwwwww. The pic above is the first I've seen on a Subaru. Hamster holes aren't as effective as a real diffuser. You can make a decent diffuser for around 100. There is a thread on it
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Old 02-10-2013, 06:52 PM   #11
thomasubi
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I'm not doing the holes anymore. I won't touch the bumper anymore. I'm going to make the undercarriage one with the little fin's. That diy on the "interior and exterior modifications" thread. Thanks for all the opinions fellas!!
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