C5 Rear diffuser making progress
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
Instructor
Joined: Feb 2015
Posts: 104
Likes: 23
very very very ...... difficult to install , but it look's great 
http://corvettecreationz.com/store/i...&product_id=83
http://corvettecreationz.com/store/i...&product_id=83
Thread Starter
Drifting
Joined: Mar 2012
Posts: 1,517
Likes: 147
From: Jasper Alabama
The diffuser I made started as a stock C6 ABS diffuser. Had to cut it in three places to fit it to a stock C5 rear bumper fascia. Mine can be installed in about 30 minutes. No drilling or cutting. No need to purchase another rear bumper.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
Thread Starter
Drifting
Joined: Mar 2012
Posts: 1,517
Likes: 147
From: Jasper Alabama
the other bumper removes the c5 reverse lights and puts them in the diffuser... it's basically a c6 bumper that uses c5 taillights, but it fits horrible from what I've seen and I have bad experiences with their hood so it's a no go for me... I would like to see some pics of your diffuser from a distance so we can get a better view of what it looks like in proportion to the rest of the car
Racer
Joined: Mar 2012
Posts: 269
Likes: 385
From: SWFL
2026 Corvette of the Year Finalist - Modified
2025 C5 of the Year Winner - Modified
2024 C5 of the Year Finalist - Modified
Thread Starter
Drifting
Joined: Mar 2012
Posts: 1,517
Likes: 147
From: Jasper Alabama
Well I put the exhaust back on, dropped her down off the jack stands and went for a 150 mile test run with the diffuser in place. Worked out great. Got a few 90 mph stretch runs and some steady 75 mph highway miles on it. Held like a glove. Here are a few pics from a distance. Have to meet with a vendor on Monday.
Last edited by Stealth02; Apr 3, 2015 at 09:50 PM.
Safety Car
Joined: Sep 2011
Posts: 4,671
Likes: 1,245
From: Southern Ca
Well I put the exhaust back on, dropped her down off the jack stands and went for a 150 mile test run with the diffuser in place. Worked out great. Got a few 90 mph stretch runs and some steady 75 mph highway miles on it. Held like a glove. Here are a few pics from a distance. Have to meet with a vendor on Monday.
Thread Starter
Drifting
Joined: Mar 2012
Posts: 1,517
Likes: 147
From: Jasper Alabama
Melting Slicks
Joined: Sep 2007
Posts: 2,182
Likes: 473
From: Rockland County NY
2020 C5 of the Year Finalist - Modified
2016 C5 of the Year Finalist
St. Jude Donor '12, '14
That looks great, let me know if you still need my fascia cover, I'd be happy to replace it with one of these haha
Le Mans Master
Joined: Feb 2007
Posts: 9,290
Likes: 1,523
From: Oviedo Florida
2024 C5 of the Year Finalist - Modified
2024 C2 of the Year Finalist - Modified
2023 C2 of the Year Finalist - Modified
2021 C2 of the Year Finalist - Modified
2016 C5 of Year Finalist
What you have accomplished so far is outstanding.
Your quasi-diffuser has a lot of style which is what
most are 'clamering' for.Nice work.
When you decide to improve your q-diffuser I suggest
you incorporate a flat square pan underneath your vette.
It can be bolted to your q-diffuser and the places that
you see fit. This way you can settle down the turbulent
air from your rear axle to the bumper. This will improve
down force greatly.
The pan can be a option for us purist and the rest will enjoy
the look. Again fine work and Good Luck.
Your quasi-diffuser has a lot of style which is what
most are 'clamering' for.Nice work.
When you decide to improve your q-diffuser I suggest
you incorporate a flat square pan underneath your vette.
It can be bolted to your q-diffuser and the places that
you see fit. This way you can settle down the turbulent
air from your rear axle to the bumper. This will improve
down force greatly.
The pan can be a option for us purist and the rest will enjoy
the look. Again fine work and Good Luck.