DYI rear appearance/diffuser Mod
Thread Starter
Heel & Toe
Joined: Nov 2015
Posts: 22
Likes: 19
From: Irvington alabama
DYI rear appearance/diffuser Mod
Hey Guys. I decided to take a chance in modifying the rear diffuser of my C7. I decided I did not want the current offerings, so I made one myself. Naturally, it is not perfect, since I used basic hand tools and know how, but, I am curious to get some feedback. Please let me know your thoughts. positive or negative. 
See attached photos.
See attached photos.
Le Mans Master
Joined: Aug 2000
Posts: 6,486
Likes: 1,659
From: Las Vegas NV
Interesting proof of concept “underwing”. If I may, I would suggest keeping the center section just a *little* more “retracted” under the tailpipes – that rear edge being flush with the tailpipe surround is the least visually attractive aspect of the underwing IMHO.
Not sure if it’s my style, but I can see others buying it.
Not sure if it’s my style, but I can see others buying it.
Melting Slicks
Joined: Sep 2009
Posts: 2,180
Likes: 233
From: Minnetrista Minnesota
Well, not feeling it. Check out ASC, they have a rear diffuser kit that looks OEM. Will put you back $400, but don't go cheap. You have a beautiful car (America's Sports Car). Make her proud!!!
CORVETTE TODAY Show Host
Joined: Oct 2013
Posts: 26,014
Likes: 7,882
From: Kansas City, Missouri
CORVETTE TODAY Host
St. Jude Donor'15
I applaud your creativity-I'm not sure if it works for me though.....
At the end of the day, it's your car. The only one you have to please is yourself.
At the end of the day, it's your car. The only one you have to please is yourself.
Thread Starter
Heel & Toe
Joined: Nov 2015
Posts: 22
Likes: 19
From: Irvington alabama
Good Observation
Interesting proof of concept “underwing”. If I may, I would suggest keeping the center section just a *little* more “retracted” under the tailpipes – that rear edge being flush with the tailpipe surround is the least visually attractive aspect of the underwing IMHO.
Not sure if it’s my style, but I can see others buying it.
Not sure if it’s my style, but I can see others buying it.
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Melting Slicks
Joined: Sep 2016
Posts: 3,076
Likes: 1,204
From: Northville Michigan
C7 of the Year - Unmodified Finalist 2021
I like to dare to be different also! However, it's your car and I respect what others do to there own but just not my taste and it doesn't have a clean 'finished' look. If fit was tight and not gaps where you see bolts/washer show through then it might look better. Work on the fit and make it appear it belongs or naturally part of the car then it might look better. Good luck continuing to improve upon the concept and you never know as you might be on to something with a more polished and finished look.
Burning Brakes
Joined: Sep 2015
Posts: 861
Likes: 156
From: California
2017 C7 of Year Finalist
I am trying to wrap my head around this. Good job for doing it yourself but why did you opt for this? I do not see any added value or benefit with this modification.