Exhaust Grew a Tail - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BeelowSS · 08-24-2015, 01:12 PM

Alright guys this is a first for me. After putting 1,100 miles on my ZL1 in my annual trip to Michigan for the dream cruise, I stopped at a quarter car wash after my 270 mile drive back to Chicagoland to debug my car. I come around the back and see my driver side tips coughing out what appears to be packing material (think unraveled brillow pad). I pulled it out and haven't done much else. See the attached pictures.

Relevant details:

- just did a bunch of work to the car (cam, headers, pulleys, injectors, tune, etc.)
- exhaust set up: 1 7/8 Kooks LT's, Kook's HFC's, stock NPP dual mode cat-back with m2w controller
- I ran back from MI with the exhaust closed until the last 30 miles

Theories:

- packing material from HFC's or mufflers (more airflow with mods, etc.)?
- _________???

Car seems to be running just fine. I've had plenty of modern muscle cars with mods and have done all kinds of driving and have never seen anything like this.

Looking forward to feedback.

Thanks,

Brent

Tenring · 08-24-2015, 03:34 PM

Wow!
Looks like someone forgot something

guerrillakilla13 · 08-24-2015, 03:48 PM

ha that's weird. Maybe give the shop a call who installed your stuff and find out why this is!

Jrichards73 · 08-24-2015, 04:01 PM

It is the packing from the muffler and it is common.

KJZ28 · 08-24-2015, 05:03 PM

Quote:

Originally Posted by Jrichards73

It is the packing from the muffler and it is common.

Yup, it happens a lot. Not necessarily on our cars, but in general.

Dizzy82 · 08-24-2015, 07:18 PM

Quote:

Originally Posted by Jrichards73

It is the packing from the muffler and it is common.

A while ago at my friend's dealership I saw a little ricer that looked like a chicken had been spit out of it's muffler.

JSure83 · 08-31-2015, 03:05 AM

That's just the sound insulation. The only major two concerns will be a change of engine tone, and potential heat issues. To be safe, I'd check to see where it's coming from and if it's against something that could catch fire if too hot, it'd be best to get some more insulation and replace it yourself. Otherwise, I wouldn't be too concerned.

Most likely, you don't need to do anything right now. I'm just saying this because I have a habit of taking care of minor things early before they potentially become major issues.

L&M CAMARO 6 · 09-04-2015, 07:55 PM

Looks to me like steel wool, it is used for sound deadening not heat insulation. IMO drive on and enjoy the ride.

08-24-2015, 01:12 PM	#1
BeelowSS Drives: 2012 SIM ZL1 Join Date: Dec 2010 Location: Roselle, IL Posts: 148	Exhaust Grew a Tail Alright guys this is a first for me. After putting 1,100 miles on my ZL1 in my annual trip to Michigan for the dream cruise, I stopped at a quarter car wash after my 270 mile drive back to Chicagoland to debug my car. I come around the back and see my driver side tips coughing out what appears to be packing material (think unraveled brillow pad). I pulled it out and haven't done much else. See the attached pictures. Relevant details: - just did a bunch of work to the car (cam, headers, pulleys, injectors, tune, etc.) - exhaust set up: 1 7/8 Kooks LT's, Kook's HFC's, stock NPP dual mode cat-back with m2w controller - I ran back from MI with the exhaust closed until the last 30 miles Theories: - packing material from HFC's or mufflers (more airflow with mods, etc.)? - _________??? Car seems to be running just fine. I've had plenty of modern muscle cars with mods and have done all kinds of driving and have never seen anything like this. Looking forward to feedback. Thanks, Brent Attached Images __________________ 2012 Chevrolet Camaro ZL1 691/649 DC Porting S/C Port NW 103mm, ported snout MPI LSA Lid w/ reinforced brick DSX Flex Fuel conversion FIC 1200's LSA 2.5” upper METCO LSA pulley kit Comp camshaft: (236/242 .602/.610 113+3) HD supercharger belt DC Conservative Tune DSS Carbon Fiber Driveshaft BMR everything McLoed HD Clutch Roto-Fab CAI MGW Shifter Kooks 1 7/8” LT's Corsa Sport AFCO HX 315/30/20 R888R 285/35/20 R888R XPEL Ultimate PPF 35% Llumar tint Oracle LED sidelights ZL1 AddOns Wicker Bill

08-24-2015, 04:01 PM	#4
Jrichards73 Drives: 2011 2SS/RS Victory Red Join Date: Aug 2011 Location: Virginia Posts: 921	It is the packing from the muffler and it is common. __________________ Updates: BTR Stage 2 VVT Cam Kit w/Smith Brothers Trunnions, Fluidampr, RX catch can, B&M Trans pan mod, Kooks Black Headers, Borla S-tunes, Eibach Multi-Pro-R2 coilovers and Swaybars, BMR Full Bushing kit with Toe and Trailing arms, RB Rotors w/EBC Pads, GForce 1400 Axles (now on order). AVH-X5800BHS in Scosche GM5201AB.

08-24-2015, 03:34 PM	#2
Tenring Drives: 2015 SS/RS M6 Commemorative Join Date: Apr 2014 Location: Arizona Posts: 2,197	Wow! Looks like someone forgot something

08-24-2015, 03:48 PM	#3
guerrillakilla13 Drives: 2014 Camaro 2SS RS 1LE Join Date: Jul 2014 Location: Arizona Posts: 711	ha that's weird. Maybe give the shop a call who installed your stuff and find out why this is!

08-31-2015, 03:05 AM	#7
JSure83 Drives: 2015 Camaro LS1 Join Date: Aug 2015 Location: California Posts: 8	That's just the sound insulation. The only major two concerns will be a change of engine tone, and potential heat issues. To be safe, I'd check to see where it's coming from and if it's against something that could catch fire if too hot, it'd be best to get some more insulation and replace it yourself. Otherwise, I wouldn't be too concerned. Most likely, you don't need to do anything right now. I'm just saying this because I have a habit of taking care of minor things early before they potentially become major issues.

09-04-2015, 07:55 PM	#8
L&M CAMARO 6 Drives: Just a fan for now Join Date: Apr 2014 Location: ROCKPILE, Illinois Posts: 361	Looks to me like steel wool, it is used for sound deadening not heat insulation. IMO drive on and enjoy the ride.