09-20-2023, 11:56 AM | #1 |
Drives: Chevrolet Camaro ZL1 Join Date: May 2022
Location: Concordia
Posts: 496
|
PSA: Aftermarket exhaust users and ANC
All aftermarket exhaust users except for Corsa need to or at least should look into disconnecting the ANC (active noise cancelling) in tandem with your exhaust install. As a guy who suffers from a really bad case of tinnitus, any odd amount of drone wreaks havoc on my ears. I always noticed that having the windows down sounded better than having the windows up and my ears weren't screaming bloody murder compared to windows up. I've seen threads here and there that talked about disconnecting the ANC due to the artificial sound it pumps into the cabin but what I didn't realize was how much validity there was to it. I went and de-pinned connector X3 pins 4/5, 12/13 at the Bose amplifier in the trunk just to see if it would help any, sure enough, it did much to my ears pleasure.
What sounded before like what I could best describe as a constant bass maddening frequency of 125-160 hz bias at RPMs between 1400-1700 RPM has now shifted in the spectrum on my DB spectrum analyzer to 80-100 hz at the same RPM. The car is not only quieter to my sensitive audible perception now but also much more pleasurable to drive. Just figured I'd bring this issue to light a little more and specifically highlight that the reason for doing this is not just for audio installs but for aftermarket exhaust setups. If there was a way to tune the ANC I'd be entirely all over it, but based on the amps design and software limitations on the HMI for 17-18 models I don't think it is currently possible.
__________________
2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% Pulley, NGK HR7 Ruthenium spark plugs, Katech Oil Pump, LME tensioner, DOD delete, Cam, MPI lid, Soler ported 87mm (91mm effective) TB, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, 186* LS3 T-stat, Black Widow Angry Housewife/ Corsa NPP mufflers, Borla X pipe, BMR engine mounts, Banks iDash, Lithium Battery, Course Motorsports phone mount, AEM X- Series, HP Tuners, JMS, E85, 13.6 psi
737 HP/ 779 TQ |
09-20-2023, 12:11 PM | #2 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 2,085
|
Interesting. An easy try it out would be to tape over those holes on your door panel before you get invasive. This ANC has been discussed quite a bit if you google it.
Last edited by WhiteMale; 09-20-2023 at 12:30 PM. |
09-20-2023, 12:19 PM | #3 |
Who Needs to KNOW?
Drives: 18 ZLE Join Date: May 2018
Location: Left Side of the Moon
Posts: 1,782
|
Never knew this was even a thing.
What year(s) did this become available? I almost exclusively drive my ZLE w windows down!
__________________
ing for grip.
Are you in the NY/NJ/PA/CT region? Join us for autox fun at MetLife Stadium. HUGE lots, tons of runs. http://www.motorsportsne.com/ |
09-20-2023, 12:23 PM | #4 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,121
|
Yeah I’ve been running the Sub Thump harness for a few years now for that reason. Plug and play so that there are no disconnected wires kicking around.
__________________
2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
|
09-20-2023, 12:35 PM | #5 | |
Drives: Chevrolet Camaro ZL1 Join Date: May 2022
Location: Concordia
Posts: 496
|
Quote:
I just de-pinned it all and then taped it all together no problems moving forward nor will ever be in the future.
__________________
2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% Pulley, NGK HR7 Ruthenium spark plugs, Katech Oil Pump, LME tensioner, DOD delete, Cam, MPI lid, Soler ported 87mm (91mm effective) TB, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, 186* LS3 T-stat, Black Widow Angry Housewife/ Corsa NPP mufflers, Borla X pipe, BMR engine mounts, Banks iDash, Lithium Battery, Course Motorsports phone mount, AEM X- Series, HP Tuners, JMS, E85, 13.6 psi
737 HP/ 779 TQ |
|
09-20-2023, 01:39 PM | #6 |
Drives: 2018 ZL-1 Join Date: Jan 2018
Location: Albuquerque
Posts: 965
|
I have never heard of this either. I have sensitive ears too. Please, tell me how do I disconnect this nonsense? Thanks.
|
09-20-2023, 01:40 PM | #7 |
Drives: 2018 ZL-1 Join Date: Jan 2018
Location: Albuquerque
Posts: 965
|
|
09-20-2023, 01:56 PM | #8 | |
Drives: Chevrolet Camaro ZL1 Join Date: May 2022
Location: Concordia
Posts: 496
|
Quote:
__________________
2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% Pulley, NGK HR7 Ruthenium spark plugs, Katech Oil Pump, LME tensioner, DOD delete, Cam, MPI lid, Soler ported 87mm (91mm effective) TB, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, 186* LS3 T-stat, Black Widow Angry Housewife/ Corsa NPP mufflers, Borla X pipe, BMR engine mounts, Banks iDash, Lithium Battery, Course Motorsports phone mount, AEM X- Series, HP Tuners, JMS, E85, 13.6 psi
737 HP/ 779 TQ |
|
09-20-2023, 02:50 PM | #9 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,953
|
I just cut the ANC wires in the trunk where my factory amp and put heat shrink tubing over them.
On my Acadia I had to snip the wires to all 4 mics in the headliner. ANC is garbage and does nothing of any real benefit other than cause issues if you add a sub to the factory audio system. I didn't realize it will go haywire with aftermarket exhaust.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
09-20-2023, 04:37 PM | #10 | |
Drives: Chevrolet Camaro ZL1 Join Date: May 2022
Location: Concordia
Posts: 496
|
Quote:
I am really surprised it's a thing in the first place given how untunable it is in factory form, now if it was entirely tunable and modifiable I think it would change the game on aftermarket exhaust that induce drone of any form.
__________________
2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% Pulley, NGK HR7 Ruthenium spark plugs, Katech Oil Pump, LME tensioner, DOD delete, Cam, MPI lid, Soler ported 87mm (91mm effective) TB, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, 186* LS3 T-stat, Black Widow Angry Housewife/ Corsa NPP mufflers, Borla X pipe, BMR engine mounts, Banks iDash, Lithium Battery, Course Motorsports phone mount, AEM X- Series, HP Tuners, JMS, E85, 13.6 psi
737 HP/ 779 TQ |
|
09-20-2023, 05:05 PM | #11 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 5,121
|
Quote:
Sub Thump makes a plug and play “harness” that lets you disconnect the 2 wires in question without messing with the wiring at all. Just plug this little $19 jumper harness in between the cars wiring and the amplifier.
__________________
2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
|
|
09-20-2023, 05:49 PM | #12 |
Drives: 2018 ZL-1 Join Date: Jan 2018
Location: Albuquerque
Posts: 965
|
Thanks.
|
09-20-2023, 06:04 PM | #13 | |
Drives: Chevrolet Camaro ZL1 Join Date: May 2022
Location: Concordia
Posts: 496
|
Quote:
__________________
2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% Pulley, NGK HR7 Ruthenium spark plugs, Katech Oil Pump, LME tensioner, DOD delete, Cam, MPI lid, Soler ported 87mm (91mm effective) TB, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, 186* LS3 T-stat, Black Widow Angry Housewife/ Corsa NPP mufflers, Borla X pipe, BMR engine mounts, Banks iDash, Lithium Battery, Course Motorsports phone mount, AEM X- Series, HP Tuners, JMS, E85, 13.6 psi
737 HP/ 779 TQ Last edited by ZLRob; 09-20-2023 at 06:51 PM. |
|
09-20-2023, 06:09 PM | #14 | |
Drives: 2018 ZL-1 Join Date: Jan 2018
Location: Albuquerque
Posts: 965
|
Quote:
|
|
|
|
Post Reply
|
|
|