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Anybody install the rear diffusers?

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Old 03-20-2018, 08:37 AM
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DGA3
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Default Anybody install the rear diffusers?

I think they look kind of cool - what do you think?

Old 03-20-2018, 08:54 AM
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NashvilleGrandSport
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Might help to note which diffusers you're asking about.

I'm kind of curious about these on eBay...
https://www.ebay.com/itm/EOS-Body-Ki...RaqEY-&vxp=mtr


I had a front splitter on my C6 GS from them and was pleased with the price and quality, and free shipping for a big box!
Old 03-20-2018, 09:09 AM
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snow
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I looked around and landed on the Difflow. Not as aggressive as some others out there. I wanted something that was more functional then cosmetic..

One note I was not impressed with the installation, but I got it worked out. See below
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Old 03-20-2018, 12:12 PM
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Originally Posted by NashvilleGrandSport
Might help to note which diffusers you're asking about.

I'm kind of curious about these on eBay...
https://www.ebay.com/itm/EOS-Body-Ki...RaqEY-&vxp=mtr


I had a front splitter on my C6 GS from them and was pleased with the price and quality, and free shipping for a big box!

I was thinking about these, but the EOS ones look the same and cost a lot less!

https://acscomposite.com/collections...ins-2-per-side
Old 03-20-2018, 12:20 PM
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Temeraire
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Originally Posted by DGA3
I think they look kind of cool - what do you think?

I think they look great - I installed the APR diffuser and love it!

I do gotta get some better pictures though, can't wait to get it out once it stops snowing and being so cold



Old 03-20-2018, 01:16 PM
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Got Difflow.
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Old 03-20-2018, 02:07 PM
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dfettero
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Looks only-They provide no performance enhancement. Ask Tadge.
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Old 03-20-2018, 02:13 PM
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Originally Posted by dfettero
Looks only-They provide no performance enhancement. Ask Tadge.
Thanks! You just answered my question.
Old 03-20-2018, 02:24 PM
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Walter Raulerson
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Just what does the diffuser do..."Diffuse" what?
Old 03-20-2018, 02:32 PM
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Originally Posted by snow
I looked around and landed on the Difflow. Not as aggressive as some others out there. I wanted something that was more functional then cosmetic..

One note I was not impressed with the installation, but I got it worked out. See below

On a slightly different topic: is that the light or smoke-tinted center wicker bill?
Old 03-20-2018, 03:16 PM
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This is the aftermarket LIGHT TINT wickerbill.
Old 03-20-2018, 03:50 PM
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Originally Posted by Walter Raulerson
Just what does the diffuser do..."Diffuse" what?
https://en.wikipedia.org/wiki/Diffuser_(automotive)
enough said


Originally Posted by dfettero
Looks only-They provide no performance enhancement. Ask Tadge.
Then why does the C7.R, and for that matter all other GTLM cars, have one?


.

Last edited by agapsdiver; 03-20-2018 at 03:54 PM.
Old 03-20-2018, 04:10 PM
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Have one on order from C7 Carbon. Should be here soon. Below is their pic on a Grand Sport, Z06- not mine.

Have reviewed the Install Instructions in detail and only one part is a bit confusing as there is no pic (or sketch) even in the Service Manual of what the "clips" are between the OEM diffuser and the upper bumper. The diffuser needs to be removed for the install. All other connections are clear:

This is what it says in their instructions and the 2014 Service Manual:

"Carefully push a small nylon wedge between the upper fascia. Insert a small flat-bladed too into the fascia slot and depress the snaps one at a time and pull on the fascia at the same time to gradually remove the upper fascia."

It would be helpful if there was a pic of what is referred to as snaps! It appears the OEM diffuser pulls out from the top rear bumper NOT down. But can't tell where to place a flat bladed tool. Assume a thin small screwdriver?

If anyone has done that and can shed some light on what the clip is please post.




Last edited by JerryU; 03-20-2018 at 04:14 PM.
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Old 03-20-2018, 05:22 PM
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Originally Posted by Walter Raulerson
Just what does the diffuser do..."Diffuse" what?
Money
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Old 03-20-2018, 07:33 PM
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Meh... The rear end is already too busy IMO without adding more non functional visual noise...
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Old 03-20-2018, 09:34 PM
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ACS diffuser fins....

-M



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Old 03-21-2018, 12:09 AM
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Originally Posted by agapsdiver
https://en.wikipedia.org/wiki/Diffuser_(automotive)
enough said
Bad Link and Wikipedia always questionable source!



Then why does the C7.R, and for that matter all other GTLM cars, have one?

.
If anyone wants to really know what a diffuser and aerodynamics is all about try, Race Engineering. Here is a quick overview of what a diffuser does:
http://www.racecar-engineering.com/t...-aerodynamics/

It's an issue for the Track, increasing downforce without the added drag from increased rear spoiler size.

Last edited by JerryU; 03-21-2018 at 12:12 AM.

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Old 03-21-2018, 01:06 AM
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///ADMAN
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https://www.corvetteforum.com/forums...rsion-kit.html

I second everything that JET VET said. My thanks again to ACS. Great products.
Great packaging. Professional instructions. Legit eComm. Lightning fast shipping.













As you can see, I did NOT remove the bumper - just the two bottom screws for the template and the three in the corners by the rear vents.
The outside fin on the drivers side was the only one that was more difficult than the others. There isn't much room to tighten the top bolt
with the eBrake unit in the way. But, it's nothing that should stop you from being able to finish in a few extra minutes.

I especially like the fact in knowing these are not going to fall off in the desert heat or extreme conditions on the track.
Old 03-21-2018, 01:55 AM
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Originally Posted by dfettero
Looks only-They provide no performance enhancement.
Looking at the full underside of the C7, it's easy to see why.
Old 03-21-2018, 07:24 AM
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DGA3
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Looks good, but do they all need to be painted (or are there more expensive ones that already come painted)?


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