03-18-2022, 11:49 PM | #1 |
Drives: Chevy Camaro ZL1 1LE Join Date: Sep 2021
Location: Indiana
Posts: 36
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Aero Dynamics Question
I’ve heard the ‘bathtub’ muffler (stock setup) helps with the underneath aero dynamics..allowing air to pass under the bathtub and out of the rear. Replacing the exhaust with smaller mufflers could in fact increase wind resistance to the rear inside bumper because there’s gaps and traps for air to circulate. Should I be considering an after market rear diffuser? Does anyone have any thoughts on this?
Going with Corsa Extreme Performance Exhaust. |
03-19-2022, 12:35 AM | #2 | |
2020 Shadow Gray 2SS
Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019
Location: SoCal
Posts: 3,191
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2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Fender Badge, Footwell Lighting
After delivery: - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Pedals, SS Wheel Caps, Black Lugs/Locks, GM Splash Guards, DD Smoked LED Markers, Smoked Rear Reflectors, Mishimoto Catch Can, Xpel PPF - Full Front, SunTek 35% Tint, CeramicPro coating, RST Stainless Brake Lines, Castrol SRF, MSD Super Conductor Wires Left: My "fun" ride. Right: My "work" ride: a Gulfstream G600. One's top speed is 180 Mph, the other, 620 Mph... BOTH are a lot of fun to operate... |
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03-19-2022, 01:12 AM | #3 | |
Drives: '19 ZL1 1LE A10 ShadowGrayMetallic Join Date: Mar 2019
Location: California
Posts: 203
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Aero Dynamics? Is that an aftermarket parts company? As another poster mentioned, a rear diffuser is well aft of the void left by deleting or shrinking the stock muffler setup (aka suitcase muffler). It won't help with the drag/turbulence/lift created by that void. |
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03-19-2022, 02:33 AM | #4 |
Drives: 2003 Monte Carlo SS SLP, 2022 ZL1 Join Date: Aug 2021
Location: Los Angeles, CA
Posts: 486
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Just install some jabroc material if you're that worried about areo.......
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03-19-2022, 03:51 AM | #5 |
Drives: Camaro Join Date: Feb 2022
Location: United States
Posts: 29
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Valid question. Yes. Removing the suitcase muffler will hurt you on the aerodynamics. But to see the hurt truly mess with you-you probably need to be well past 100mph.
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03-19-2022, 08:55 AM | #6 | |
Drives: Chevy Camaro ZL1 1LE Join Date: Sep 2021
Location: Indiana
Posts: 36
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03-19-2022, 08:56 AM | #7 | |
Drives: Chevy Camaro ZL1 1LE Join Date: Sep 2021
Location: Indiana
Posts: 36
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03-19-2022, 08:57 AM | #8 |
Drives: Chevy Camaro ZL1 1LE Join Date: Sep 2021
Location: Indiana
Posts: 36
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03-19-2022, 08:58 AM | #9 |
Drives: Chevy Camaro ZL1 1LE Join Date: Sep 2021
Location: Indiana
Posts: 36
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03-19-2022, 09:05 AM | #10 |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: GA
Posts: 3,292
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Lots of speculation in this thread and no data to back it up.
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03-19-2022, 10:19 AM | #11 |
Drives: 2018 Camaro ZL1 Join Date: Aug 2018
Location: Georgia
Posts: 1,410
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03-19-2022, 11:23 AM | #12 | |
Drives: 2021 Red Hot ZL1 Join Date: Sep 2020
Location: GA
Posts: 3,292
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03-19-2022, 11:33 AM | #13 | |
Drives: 22 ZL1 1LE A10 Join Date: Feb 2022
Location: Ohio
Posts: 233
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https://youtu.be/Pgpawejpi6o |
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03-19-2022, 11:39 AM | #14 | |
Drives: 2018 Camaro ZL1 Join Date: Aug 2018
Location: Georgia
Posts: 1,410
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If you look under race cars, let's say NASCAR, you don't see an opening like you would on the ZL1 without the suitcase exhaust. Yes those are race cars and not street cars but the law of physics doesn't care. I don't know how many ZL1s without the stock suitcase actually races the road course regularly and at sustained speeds of over 100 mph. I don't think anyone will experiment on how much drag this can make with and without the stock suitcase. But in theory, it will cause an issue but how much is beyond my caring since I'm never getting rid of the stock suitcase. |
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