Sooty exhaust outlets

zx9rmal · 01-26-2022, 05:02 AM

I haven’t looked at my exhaust pipes in a while. Someone pointed out how black they are. Like really sooty. Normal on these cars? Mine is stock except for a RF CAI. Does it pay to have the car tuned to get a betterAFR?

ZLE dude · 01-26-2022, 06:03 AM

Very normal. They are rich running, especially in stock form. I stopped cleaning mine a long time ago. Now they just look like they are supposed to be black.

PROMETHEUS · 01-26-2022, 06:28 AM

Normal, they are fine.

LT4Greg · 01-26-2022, 06:33 AM

Yep same with mine!

hawk02 · 01-26-2022, 06:35 AM

As other have said, very normal to have sooty exhaust pipes. The stock tune dumps a lot fuel at wide open throttle to help cool the catalytic converters.

joekd · 01-26-2022, 07:47 AM

My car has the NPP (4 outlet) exhaust, since I have the fuse pulled it only uses the outside pipes and was very obvious where one tip was black and the one next to it sparkling silver so I gave mine a really good cleaning then painted inside the tips with satin black paint

Spaceme1117 · 01-26-2022, 08:06 AM

Normal. The parking space bumper where I back up to park at my apartment is right under where the water drain holes are for the NPP exhaust. It looks like someone spray painted the bumper in two spots with black spray paint.

zx9rmal · 01-26-2022, 08:12 AM

Thanks for the responses. God knows what the combustion chambers are gonna look like down the road.

Any advantage to tuning a stock motor with CAI?

SJFGTO · 01-26-2022, 08:31 AM

Quote:

Originally Posted by zx9rmal

Thanks for the responses. God knows what the combustion chambers are gonna look like down the road.

Any advantage to tuning a stock motor with CAI?

Not worth the money or loss or your warranty.

WhiteMale · 01-26-2022, 08:49 AM

The stock NPP is really notorious on the suitcase for all the moisture that releases it's really unsightly. I changed out to an axle back and just get sooty tips. A foam attachment on the drill and a little cleaner takes it right off, btw.

Timbo-1LE · 01-26-2022, 08:58 AM

I believe its a byproduct of Direct Injection. Normal.

Kerry · 01-26-2022, 12:32 PM

Quote:

Originally Posted by Timbo-1LE

I believe its a byproduct of Direct Injection. Normal.

100

SSDan · 01-26-2022, 12:35 PM

Quote:

Originally Posted by joekd

I gave mine a really good cleaning then painted inside the tips with satin black paint

I did the same thing 5 years ago and have not touched the inside of the exhaust tips since. This has worked out great for me. Check post #1 and post #14 if you want to see some before and after photos.

https://www.camaro6.com/forums/showthread.php?t=471821

01-26-2022, 06:03 AM	#2
ZLE dude Drives: '18 ZL1 1LE Join Date: May 2020 Location: KY Posts: 219	Very normal. They are rich running, especially in stock form. I stopped cleaning mine a long time ago. Now they just look like they are supposed to be black. __________________ 2018 ZL1 1LE - Summit White, PDR, Rotofab CAI, 95mm TB, CSP 2" catless LT's, JMS Voltage Booster, AEM X-series WB, DSX flex fuel sensor, Banks Data Monster, Tuned by Ted Jannetty, 5% Tint, Blackvue DR900S-2CH, Diode Dynamics lighting, IGL Kenzo ceramic coating

01-26-2022, 06:33 AM	#4
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,813	Yep same with mine! __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

01-26-2022, 06:35 AM	#5
hawk02 Coupe Newbie Drives: 2017 ZL1, 2021 Corvette Convertible Join Date: Jul 2011 Location: Columbus, Ohio Posts: 3,283 View My Garage	As other have said, very normal to have sooty exhaust pipes. The stock tune dumps a lot fuel at wide open throttle to help cool the catalytic converters. __________________

01-26-2022, 07:47 AM	#6
joekd Drives: 2018 Camaro SS vert Join Date: Oct 2020 Location: CT Posts: 449	My car has the NPP (4 outlet) exhaust, since I have the fuse pulled it only uses the outside pipes and was very obvious where one tip was black and the one next to it sparkling silver so I gave mine a really good cleaning then painted inside the tips with satin black paint __________________

01-26-2022, 08:12 AM	#8
zx9rmal Drives: '20 ZL1 M6 Join Date: Apr 2017 Location: FT. Lauderdale, FL Posts: 717	Thanks for the responses. God knows what the combustion chambers are gonna look like down the road. Any advantage to tuning a stock motor with CAI? __________________ Mal Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R

01-26-2022, 05:02 AM	#1
zx9rmal Drives: '20 ZL1 M6 Join Date: Apr 2017 Location: FT. Lauderdale, FL Posts: 717	Sooty exhaust outlets I haven’t looked at my exhaust pipes in a while. Someone pointed out how black they are. Like really sooty. Normal on these cars? Mine is stock except for a RF CAI. Does it pay to have the car tuned to get a betterAFR? __________________ Mal Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R

01-26-2022, 06:28 AM	#3
PROMETHEUS Drives: 2019 ZL-1, Shadow Gray, Sold Join Date: Jan 2019 Location: Fredericksburg, VA Posts: 1,390	Normal, they are fine.

01-26-2022, 08:06 AM	#7
Spaceme1117 Drives: 2017 Camaro SS, 2011 Corvette GS Join Date: Feb 2019 Location: Erlanger, Kentucky 41018 Posts: 815	Normal. The parking space bumper where I back up to park at my apartment is right under where the water drain holes are for the NPP exhaust. It looks like someone spray painted the bumper in two spots with black spray paint.

01-26-2022, 08:49 AM	#10
WhiteMale Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020 Location: MO Posts: 1,990	The stock NPP is really notorious on the suitcase for all the moisture that releases it's really unsightly. I changed out to an axle back and just get sooty tips. A foam attachment on the drill and a little cleaner takes it right off, btw.

01-26-2022, 08:58 AM	#11
Timbo-1LE Drives: 2017 SS 1LE Join Date: Mar 2017 Location: Florida Posts: 617	I believe its a byproduct of Direct Injection. Normal.

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