06-23-2022, 07:00 PM | #1 |
Drives: 2017 Camaro SS Join Date: Nov 2017
Location: Palm Beach Gardens
Posts: 30
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How to Get Rid of Drone?
I installed kooks 2" headers, non green cats and their complete 3" dual exhaust on my 2017 Camaro back in 2019.
It flows great but the drone is really really bad. My wife doesn't even want to go in the car. The A8 probably makes it worse because it keeps it at a lower rpm. I still need to put the rear valance on but at this point doubt it effects the drone. Is the best option to try to find replacement mufflers? I was thinking about the J pipes from Solo Performance but I think I should try the mufflers first. |
06-23-2022, 09:25 PM | #2 |
Drives: 18 ZL1 - M6 Join Date: Mar 2019
Location: MI
Posts: 440
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06-24-2022, 05:15 AM | #3 |
Drives: 2017 Camaro SS, 2011 Corvette GS Join Date: Feb 2019
Location: Erlanger, Kentucky 41018
Posts: 815
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I have Kooks, non-green cats going into the factory NPP exhaust. Nice and loud when I want it to be. No drone at all when cruising in any of the three modes.
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06-24-2022, 09:07 AM | #4 |
Drives: 2023 2SS Convertible Join Date: May 2009
Location: Metro Detroit
Posts: 1,062
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My suggestion to get away from drone is to stay away from mufflers that are nothing but straight-through perforated pipes surrounded by fiberglass fill. This type of muffler sounds great at idle and WOT, but have no mechanism to cancel out the drone. They will quiet down the overall loudness slightly, but will not do much for the drone. If you go to that link above, all those mufflers shown are like that, even the X pipes.
To get rid of drone, you need "Volume" - not sound volume, but empty space volume. It is like when you blow on an empty pop bottle and the air resonates or hums - the same exact thing is happening in your stock exhaust, it is just humming in such a way to cancel the drone (google "Helmholtz resonator"). The J-pipes give you the cancellation volume externally, and a lot of the aftermarket companies make mufflers that have the tuned volume internally. Corsa advertises their design on their website under the "Technology" tab. If you look at the picture on the right (on their website), it shows a two chamber Helmholtz resonator type muffler. Borla also has designs like this with internal cancelation, and a lot of companies do the external volumes (MBRP, Solo, and others). Best advice is to find someone with a similar setup to yours and copy it exactly. Most of the aftermarket stuff is going to be tuned to the stock headers, so it might not work 100% with the Kooks (but will probably still cancel some of the drone). The stock muffler has a TON of volume too, so that is probably a good start if you just want to just get rid of the drone in a hurry. -Geoff
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'12 2SS RS Convertible - Traded in.
'16 2SS Convertible - White on white, mag-ride, NPP, nav. Sold! '23 2SS Convertible -Same as above except orange. |
06-24-2022, 06:46 PM | #5 |
Drives: 1SS Summit White 6 speed Join Date: Jul 2017
Location: Gainesville GA
Posts: 579
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Solo exhaust fixed it for me
Also try the sound deadening mat It was like $200 and custom fitted for trunk Helped alot also
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16 1SS M6 White
Magnuson 2.3 Heartbeat Roto Fab Solo Performance Cat deletes and Axleback Hurst short shifter #'s coming soon Riaction coilovers 1LE sway bars BMR mm BMR chassis brace Flow one 19" wheels wrapped in Mickey Thompsons 02 Z28 M6 35th anniversary 80k miles T-tops Leather Bolt ons Joy to drive this classic every day! Daily Driver |
06-24-2022, 06:52 PM | #6 |
Drives: like an old lady Join Date: Jun 2012
Location: indiana
Posts: 2,396
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i am in this conundrum now as well. i simply pick a different gear.
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06-24-2022, 08:49 PM | #7 |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
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06-25-2022, 07:07 PM | #8 | |
Drives: 2022 Camaro 2SS 1LE Join Date: Nov 2021
Location: NC
Posts: 271
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