Exhaust makes a weird sound?

CamaroChill · 10-29-2023, 02:30 PM

Hi fellow Camaro owners!

Today I took my new Camaro for a spin and tried to push the gas pedal a little more than usual, but nothing crazy.

when I came back to the garage, I noticed a strange sound coming from the exhaust that I could hear even during the drive.

Anybody knows what's up with the exhaust? Better to have it checked from a mechanic? What could be the reasons? I hope nothing serious!

Thanks!

Video: https://imgur.com/a/M76fAPJ

RideWithDanger · 10-29-2023, 03:33 PM

I am no exhaustoligist but it sounds like you have something stuck inside the muffler(s) and its rattling around. Is it coming only from one side, or both?

CamaroChill · 10-29-2023, 04:35 PM

Quote:

Originally Posted by RideWithDanger

I am no exhaustoligist but it sounds like you have something stuck inside the muffler(s) and its rattling around. Is it coming only from one side, or both?

Haven't checked properly but I think both sides, but more on the left. If I pushed the exhaust with my foot, it stops the sound.

Interesting theory that something might be inside the mufflers. If that's the case, what's the go-to process to fix it?

LT1gen6 · 10-29-2023, 04:41 PM

Find a nice, straight, flat, long stretch of smooth pavement, devoid of vehicles, pedestrians, and animals. Go as fast as you can for as long as possible. That should fix it. If not, at least you'll be happier than if you didn't enjoy that exhilarating jaunt.

CamaroChill · 10-29-2023, 04:57 PM

Quote:

Originally Posted by LT1gen6

Find a nice, straight, flat, long stretch of smooth pavement, devoid of vehicles, pedestrians, and animals. Go as fast as you can for as long as possible. That should fix it. If not, at least you'll be happier than if you didn't enjoy that exhilarating jaunt.

Thanks man, I'll do that, I just hope that the exhaust doesn't need to be reinstalled or fixed in place

NiickySaz · 10-29-2023, 05:11 PM

Probably a long shot but, if you have NPP, I'd say a loose butterfly valve?

CamaroChill · 10-29-2023, 05:24 PM

Quote:

Originally Posted by NiickySaz

Probably a long shot but, if you have NPP, I'd say a loose butterfly valve?

I do have NPP. Thanks, I'll ask the mechanic to take a look. In your opinion is more probable to have a loose valve than the whole exhaust not properly fixed?

Booher · 10-30-2023, 12:51 AM

+1 for loose butterfly valve. The earlier models had this issue, although I have never heard it sound quite like that. I believe some tightening and some glue was the fix. Hopefully, that's your culprit, gl!

arpad_m · 10-30-2023, 07:34 AM

He has a Borla exhaust with its own NPP valves, so the stock remedy may or may not apply. I recall early Borla NPP exhausts had a rattling issue of their own, not sure what the fix was.

NiickySaz · 10-30-2023, 09:41 AM

Quote:

Originally Posted by CamaroChill

I do have NPP. Thanks, I'll ask the mechanic to take a look. In your opinion is more probable to have a loose valve than the whole exhaust not properly fixed?

I'm not to sure to honest. I'm not familiar with the system. If that is what it is, get a quote and just take it from there. I do not have NPP on mine, apologies

CamaroChill · 10-31-2023, 07:05 PM

Hey guys, the mechanic today checked the valve and he said it was good. We couldn't find out what the issue was because today the noise was much lower. Will try again next time and will get in touch with Borla, sending the video.

Will keep you posted!

10-29-2023, 02:30 PM	#1
CamaroChill Drives: Camaro 2016 RS Join Date: Jan 2022 Location: Europe Posts: 115	Exhaust makes a weird sound? Hi fellow Camaro owners! Today I took my new Camaro for a spin and tried to push the gas pedal a little more than usual, but nothing crazy. when I came back to the garage, I noticed a strange sound coming from the exhaust that I could hear even during the drive. Anybody knows what's up with the exhaust? Better to have it checked from a mechanic? What could be the reasons? I hope nothing serious! Thanks! Video: https://imgur.com/a/M76fAPJ

10-29-2023, 03:33 PM	#2
RideWithDanger Drives: 23 2SS 1LE Join Date: Feb 2019 Location: GA Posts: 586	I am no exhaustoligist but it sounds like you have something stuck inside the muffler(s) and its rattling around. Is it coming only from one side, or both? __________________ Instagram: RideWithDanger Radiant Red 23' 2SS 1LE 1100: 11/14/22 \| BUILT: 3/16/23 2000: 2/17/23 \| 4200: 5/8/23 3000: 2/27/23 \| 5000/6000: 5/15/23 Black on black 2019 3LT RS Camaro. 1100: 3/7/19 \| 4200: 4/15/19 3100: 3/15/19 \| 4800: 4/23/19 3400: 3/22/19 \| 5000: 4/25/19 Built: 4/8/19 \| Home: 4/26/19

10-30-2023, 07:34 AM	#9
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,723 View My Garage	He has a Borla exhaust with its own NPP valves, so the stock remedy may or may not apply. I recall early Borla NPP exhausts had a rattling issue of their own, not sure what the fix was. __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

10-29-2023, 04:41 PM	#4
LT1gen6 Drives: '22 LT1 Coupe Join Date: Nov 2021 Location: Motor City Metro Posts: 214	Find a nice, straight, flat, long stretch of smooth pavement, devoid of vehicles, pedestrians, and animals. Go as fast as you can for as long as possible. That should fix it. If not, at least you'll be happier than if you didn't enjoy that exhilarating jaunt.

10-29-2023, 05:11 PM	#6
NiickySaz Drives: 2023 Camaro 1LT V6 Join Date: Jul 2023 Location: Texas Posts: 101	Probably a long shot but, if you have NPP, I'd say a loose butterfly valve?

10-30-2023, 12:51 AM	#8
Booher Drives: 2019 zl1 6 speed Join Date: Jul 2017 Location: Lake Havasu Arizona Posts: 990	+1 for loose butterfly valve. The earlier models had this issue, although I have never heard it sound quite like that. I believe some tightening and some glue was the fix. Hopefully, that's your culprit, gl!

10-31-2023, 07:05 PM	#11
CamaroChill Drives: Camaro 2016 RS Join Date: Jan 2022 Location: Europe Posts: 115	Hey guys, the mechanic today checked the valve and he said it was good. We couldn't find out what the issue was because today the noise was much lower. Will try again next time and will get in touch with Borla, sending the video. Will keep you posted!

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