Exhaust Burble

Fast4wd · 07-08-2022, 10:19 AM

As I near the 1500 mile mark on my 22 ZLE, I am wondering if the amount of exhaust burble I am hearing would be considered "normal" for a completely stock car. I usually keep the exhaust in track mode and generally drive with a low to moderate acceleration. I am certainly not beating on the car at all.

Every time I lift off throttle and coast I get a tremendous amount of pops and bangs, sometimes it will even happen between shifts at low speed/rpm. In addition, my exhaust tips get the black residue after only a couple of weeks. It's reminiscent of the first gen Jaguar F-type in how much it burbles.

All gauges are reading in normal range so I assume all is well, but looking for some opinions.

mariojas · 07-08-2022, 10:32 AM

Quote:

Originally Posted by Fast4wd

As I near the 1500 mile mark on my 22 ZLE, I am wondering if the amount of exhaust burble I am hearing would be considered "normal" for a completely stock car. I usually keep the exhaust in track mode and generally drive with a low to moderate acceleration. I am certainly not beating on the car at all.

Every time I lift off throttle and coast I get a tremendous amount of pops and bangs, sometimes it will even happen between shifts at low speed/rpm. In addition, my exhaust tips get the black residue after only a couple of weeks. It's reminiscent of the first gen Jaguar F-type in how much it burbles.

All gauges are reading in normal range so I assume all is well, but looking for some opinions.

Same. It gets annoying sometimes

hawk02 · 07-08-2022, 10:40 AM

The burbles are normal. It's the result of deceleration fuel cutoff (DFCO) and if you have a manual, clutch fuel cut off (CFCO). These are programmed in the tune.

Any unburnt fuel in the exhaust when these kick in will ignite causing the burbles. I should also mention that spark timing when DFCO and CFCO kick in also plays a role in causing the pops and bangs.

The black exhaust tips are also normal. These cars a programmed to run rich from the factory. Driving in stop and go traffic will make the tips turn black even faster.

Your car is perfectly normal. Enjoy the pops and the bangs. It's a cool feature of the Camaro.

David Gordon · 07-08-2022, 10:43 AM

My new 22 ZL1 burbles and I like it..

2SS Capt · 07-08-2022, 12:40 PM

Quote:

Originally Posted by Fast4wd

As I near the 1500 mile mark on my 22 ZLE, I am wondering if the amount of exhaust burble I am hearing would be considered "normal" for a completely stock car. I usually keep the exhaust in track mode and generally drive with a low to moderate acceleration. I am certainly not beating on the car at all.

Every time I lift off throttle and coast I get a tremendous amount of pops and bangs, sometimes it will even happen between shifts at low speed/rpm. In addition, my exhaust tips get the black residue after only a couple of weeks. It's reminiscent of the first gen Jaguar F-type in how much it burbles.

All gauges are reading in normal range so I assume all is well, but looking for some opinions.

Quote:

Originally Posted by hawk02

The burbles are normal. It's the result of deceleration fuel cutoff (DFCO) and if you have a manual, clutch fuel cut off (CFCO). These are programmed in the tune.

Any unburnt fuel in the exhaust when these kick in will ignite causing the burbles. I should also mention that spark timing when DFCO and CFCO kick in also plays a role in causing the pops and bangs.

The black exhaust tips are also normal. These cars a programmed to run rich from the factory. Driving in stop and go traffic will make the tips turn black even faster.

Your car is perfectly normal. Enjoy the pops and the bangs. It's a cool feature of the Camaro.

As hawk02 said, it is programmed into the tune and is perfectly normal, I think this started with the 2019 model year... If you really want to make it snap, crackle and pop, accelerate hard in 2nd gear and then let off the gas...

Enjoy!

SATINSTEEL1LE · 07-08-2022, 12:41 PM

The burble was actually added to the 19+ cars. The 17-18 cars do not do that. Its a calibration change that was made.

ZED SLED · 07-08-2022, 01:30 PM

Quote:

Originally Posted by SATINSTEEL1LE

The burble was actually added to the 19+ cars. The 17-18 cars do not do that. Its a calibration change that was made.

My 2017 does it, as did my 2010 SS and 2013 ZL1

Fast4wd · 07-08-2022, 01:31 PM

Satinsteel and 2SS Capt,

Thank you for specifying the year. I previously owned a 2018 SS 1LE that did NOT burble at all. I thought I was going crazy. I figured it was just tuned to run rich but I wanted to be sure.

Thanks all.

SSDan · 07-08-2022, 01:53 PM

Odd that is was added to the 2019 tune as posted by others. Maybe its an LT4 engine thing. My 2016 SS M6 has had the decel burble and pop ever since the day I got it back in March of 2016. I like it!

MP3BOOSTED · 07-08-2022, 02:03 PM

Quote:

Originally Posted by SSDan

Odd that is was added to the 2019 tune as posted by others. Maybe its an LT4 engine thing. My 2016 SS M6 has had the decel burble and pop ever since the day I got it back in March of 2016. I like it!

same here but from our years to a 2019 is a HUGE difference in it, they had the tuning tables posted on here years back and i ended up changing to them and i tell you, my car does it like crazy now. straight pipe with that sounds like a shootout when i'm driving the camaro

2SS Capt · 07-08-2022, 02:17 PM

Exactly, the tune was changed in 2019 to greatly increase the snap, crackle and pops...

SSDan · 07-08-2022, 02:47 PM

Quote:

Originally Posted by MP3BOOSTED

same here but from our years to a 2019 is a HUGE difference in it, they had the tuning tables posted on here years back and i ended up changing to them and i tell you, my car does it like crazy now. straight pipe with that sounds like a shootout when i'm driving the camaro

Quote:

Originally Posted by 2SS Capt

Exactly, the tune was changed in 2019 to greatly increase the snap, crackle and pops...

Fair enough. Thanks for the details. I have not ridden or driven a Camaro 2019 or newer.

ZLRob · 07-08-2022, 03:02 PM

Quote:

Originally Posted by SATINSTEEL1LE

The burble was actually added to the 19+ cars. The 17-18 cars do not do that. Its a calibration change that was made.

My 17 has always done the burbles and pops, even when the calibration was all OE.

I'd have to go back and compare a 17 to a 19 all factory calibration, but I'd be willing to bet they are the same.

hawk02 · 07-08-2022, 03:23 PM

Quote:

Originally Posted by ZED SLED

My 2017 does it, as did my 2010 SS and 2013 ZL1

So does my ‘17 pop and bang and my 2013 ZL1 did also.

07-08-2022, 10:19 AM	#1
Fast4wd Drives: 2022 ZLE Join Date: Apr 2019 Location: NY Posts: 29	Exhaust Burble As I near the 1500 mile mark on my 22 ZLE, I am wondering if the amount of exhaust burble I am hearing would be considered "normal" for a completely stock car. I usually keep the exhaust in track mode and generally drive with a low to moderate acceleration. I am certainly not beating on the car at all. Every time I lift off throttle and coast I get a tremendous amount of pops and bangs, sometimes it will even happen between shifts at low speed/rpm. In addition, my exhaust tips get the black residue after only a couple of weeks. It's reminiscent of the first gen Jaguar F-type in how much it burbles. All gauges are reading in normal range so I assume all is well, but looking for some opinions.

07-08-2022, 10:40 AM	#3
hawk02 Coupe Newbie Drives: 2017 ZL1, 2021 Corvette Convertible Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,285 View My Garage	The burbles are normal. It's the result of deceleration fuel cutoff (DFCO) and if you have a manual, clutch fuel cut off (CFCO). These are programmed in the tune. Any unburnt fuel in the exhaust when these kick in will ignite causing the burbles. I should also mention that spark timing when DFCO and CFCO kick in also plays a role in causing the pops and bangs. The black exhaust tips are also normal. These cars a programmed to run rich from the factory. Driving in stop and go traffic will make the tips turn black even faster. Your car is perfectly normal. Enjoy the pops and the bangs. It's a cool feature of the Camaro. __________________

07-08-2022, 10:43 AM	#4
David Gordon Drives: 2018 Grandsport Corvette Join Date: Apr 2022 Location: Granbury Posts: 270	My new 22 ZL1 burbles and I like it.. __________________ 2022 Orange ZL1 4/07/22 7-01-22 Past 2018 Gransport 2018 GT Premium 2009 ZO6 2008 Z-51 Vette 2001 Stroked/ blown C-5 2001 SS 1998 SS vert. Garage 2020 Range Rover V-8 2021 Ford F-150 Platinum Powerboost

07-08-2022, 01:53 PM	#9
SSDan Drives: 2016 1SS 6MT NPP Join Date: Feb 2010 Location: Lake Murray, SC Posts: 2,245 View My Garage	Odd that is was added to the 2019 tune as posted by others. Maybe its an LT4 engine thing. My 2016 SS M6 has had the decel burble and pop ever since the day I got it back in March of 2016. I like it! __________________ 2016 Camaro 1SS Hyper Blue 6MT NPP 2010 Camaro 2SS Cam/Headers/CAI/3.91 gears 476 rwhp/440 rwtq (sold)

07-08-2022, 02:17 PM	#11
2SS Capt 2020 Shadow Gray 2SS Drives: 2020 2SS - A10, NPP, MRC, CAI Join Date: Dec 2019 Location: SoCal Posts: 3,035	Exactly, the tune was changed in 2019 to greatly increase the snap, crackle and pops... __________________ 2020 SGM 2SS - A10, NPP, MRC, Red Calipers, Black Camaro Fender Badge, Footwell Lighting *Added after delivery:* - GMP CAI, GMP Black Strut Tower Brace, MRR017 1LE Wheels, SS Armrest, Black Fuel Door, Stainless Sport 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...*

07-08-2022, 12:41 PM	#6
SATINSTEEL1LE Account Suspended Drives: 21 ZL1 Join Date: Feb 2022 Location: South East Posts: 662	The burble was actually added to the 19+ cars. The 17-18 cars do not do that. Its a calibration change that was made.

07-08-2022, 01:31 PM	#8
Fast4wd Drives: 2022 ZLE Join Date: Apr 2019 Location: NY Posts: 29	Satinsteel and 2SS Capt, Thank you for specifying the year. I previously owned a 2018 SS 1LE that did NOT burble at all. I thought I was going crazy. I figured it was just tuned to run rich but I wanted to be sure. Thanks all.

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