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rear diffuser a replacement for rear spoiler?

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Old Mar 20, 2009 | 12:01 PM
  #16  
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From: strong island NY
I believe theres no replacement for the spoiler, and interesting to know what motor trend said, I mean if the car was engineered a certain way it was probably for a good reason. Sometimes I think if an evo never came with a spoiler then everyone would be putting spoilers on instead of removing stock ones. It's part of the cars signature to me. I would think the spoiler diffuser combo would be best. Just my two cents
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Old Mar 20, 2009 | 06:39 PM
  #17  
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You will not be able to tell any difference in regular street driving. Been driving wingless for years.
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Old Mar 20, 2009 | 08:53 PM
  #18  
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anyone have any suggestions on best approach to remove the holes left from the spoiler? Buy a 2002-2004 lancer trunk? weld, bondo my current one?
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Old Mar 20, 2009 | 11:05 PM
  #19  
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Originally Posted by dtrackstar
anyone have any suggestions on best approach to remove the holes left from the spoiler? Buy a 2002-2004 lancer trunk? weld, bondo my current one?
Find someone with the same color car but in RS trim that wants a wing. Swap trunks. . .

Other than that - weld or bondo and repaint. . .

Or you can go the expensive route to fix those holes - first remove the lock mechanism. Then remove teh 4 bolts holding the trunk on. Then toss it out. Then intall a carbon trunk. Then re-install the lock mechanism. . .
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Old Mar 21, 2009 | 12:03 PM
  #20  
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who makes the best diffuser? anyone have pic's of there diffuser?
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Old Mar 21, 2009 | 12:37 PM
  #21  
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wingless evo's ftl. Evo's are meant to have wings dammit!
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Old Mar 21, 2009 | 04:34 PM
  #22  
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Originally Posted by bbyevo8u
who makes the best diffuser? anyone have pic's of there diffuser?
There are hundreds of pictures on the forums. Try searching for Aero, Aerodynamics, Diffuser. . .

The is no clear cut answer to which one is "the best" as they all have not been tested back to back to back for downforce and drag. . .

Many will say that the Voltex rear diffuser is probably the best as it has actually been tested in a full scale wind tunnel as well as on one of the fastest EVOs in the counrty. . .

EVOlutionary
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Old Mar 21, 2009 | 04:57 PM
  #23  
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From: Boaz, AL
I'm currently wingless, but only because I had to fix the flaking clear coat. I used black vinyl from a vinyl shop. If you ask them for some scrap they have lying around, they'll probably just give it to you for free. All you need are some quarter sized circle cut-outs anyway. Its a cheap, but not permanent solution.
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Old Mar 21, 2009 | 08:40 PM
  #24  
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From: FL
Originally Posted by sonicnofadz
wingless evo's ftl. Evo's are meant to have wings dammit!
Ah yes, the RS is just a Lancer.
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Old Mar 22, 2009 | 09:13 AM
  #25  
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From: Boaz, AL
Originally Posted by SHhhhh
Ah yes, the RS is just a Lancer.
turns head, covers mouth, and says "oh snap"...
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Old Mar 23, 2009 | 09:54 AM
  #26  
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correction** the stock spoiler produces 68lbs of downforce at 100mph according to motor trend which quoted Mitsubishi. I went back and found the article. I was wrong when I previously said 50.
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Old Mar 23, 2009 | 10:24 PM
  #27  
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Good Info to know
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Old Mar 24, 2009 | 04:50 AM
  #28  
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From: Joisey Shore
keep in mind that doing a rear bumper diffuser wont do much unless you have an under panel up front.
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Old Mar 24, 2009 | 08:07 AM
  #29  
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the rear diffuser helps the underaero of your car and will give you no added downforce. it will only clean up the air below. in my opinion it would be better to keep your wing and add the diffuser
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Old Mar 24, 2009 | 04:50 PM
  #30  
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Not true. A properly designed rear diffuser will reduce drag AND make downforce. . .
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