ZLE Exhaust

Filiper · 11-09-2018, 09:34 AM

Good Morning Guys,

I recently purchased a 19 ZLE and while I absolutely love the car, I'm a bit disappointed in the OEM exhaust system in terms of noise. I really wish it could be a bit louder without being obnoxious. While I've reviewed the forums on custom systems, do any ZLE owners have any recommendations? Will void my warranty?

dmcmahan60 · 11-09-2018, 09:56 AM

Look into AWE exhaust from the RDPstore.com with Dynosteve on this forum. He will take care of you.

1hprush · 11-09-2018, 10:06 AM

Quote:

Originally Posted by dmcmahan60

Look into AWE exhaust from the RDPstore.com with Dynosteve on this forum. He will take care of you.

Great sounding exhaust, but does not come with NPP option. I personally like the Borla Atak. I feel like if you are going to spend that kind of money on a car, you should be able to utilize all it's functions. I love my ZLE, but can't use the suspension modes.

Filiper · 11-09-2018, 10:09 AM

Quote:

Originally Posted by 1hprush

Great sounding exhaust, but does not come with NPP option. I personally like the Borla Atak. I feel like if you are going to spend that kind of money on a car, you should be able to utilize all it's functions. I love my ZLE, but can't use the suspension modes.

Is you remove the NPP, do you get a check engine light? What about tuning? I've never changed an exhaust on a car before, but on my bikes I always have to get a tune.

1hprush · 11-09-2018, 10:15 AM

Quote:

Originally Posted by Filiper

Is you remove the NPP, do you get a check engine light? What about tuning? I've never changed an exhaust on a car before, but on my bikes I always have to get a tune.

No CEL, you can just tie back the NPP actuators, the car will sound great without NPP, it's like leaving the valves/flaps open all the time.

JDP Sales · 11-09-2018, 10:19 AM

We would suggest also looking at the Borla S-Type systems as well. Amazing sound and at a great price. Doing a cat back or axle back system will not void your warranty nor will you need a tune. It's a bolt on and go mod

. Let us know if you have any questions on pricing! Always happy to help.

Cheers,

Kayla L.
801.545.4215

tomster · 11-09-2018, 01:11 PM

remove your rear cats for $60 bucks... Slight increase in sound at low cost, if you still need more sound go with a axle back

mdmoore23 · 11-09-2018, 01:57 PM

Kooks Axleback. It can be purchased for under $700. It has no valves, hit to most that's a non issue. I pulled the fuse for my valves as soon as I got the car home so i never used them anyway. Take a listen To my car here.
https://youtu.be/nyTESHFm5Dw

SJFGTO · 11-09-2018, 02:44 PM

An axle back or cat back will improve sound and will not void your warranty nor will it trigger a CEL regardless if you eliminate the NNP. Eliminating the secondary cats could technically be claimed by a dealer as a warranty killer, but frankly that would be incorrect in nearly every instance since they are not integral to the emissions control system and should not trigger a cel if removed. No tune necessary for a cat back or axle back. Lots of great threads and videos on exhaust options.

BUD/ZL1/1LE · 11-10-2018, 05:22 AM

:

Quote:

Originally Posted by 1hprush

No CEL, you can just tie back the NPP actuators, the car will sound great without NPP, it's like leaving the valves/flaps open all the time.

Just pull the fuse in the fuse box. Flaps will stay open all the time.

jvandy50 · 11-10-2018, 11:17 AM

I’m in the same boat OP. Needs more volume. And the funky way the flaps still close sometimes in the modes i think they shouldn’t, well, i may just do away with them...that’s annoying.

May remove the fuse first and make sure i don’t miss it.

breakskeet · 11-10-2018, 12:19 PM

Quote:

Originally Posted by BUD/ZL1/1LE

:

Just pull the fuse in the fuse box. Flaps will stay open all the time.

I pull fuse #51 in my 2018 ZL1 1LE and my CEL comes on.

VAZL1 · 11-10-2018, 01:16 PM

Quote:

Originally Posted by breakskeet

I pull fuse #51 in my 2018 ZL1 1LE and my CEL comes on.

No need to pull the fuse, this is an option under settings.

*mlee* · 11-10-2018, 01:49 PM

Quote:

Originally Posted by Filiper

Is you remove the NPP, do you get a check engine light? What about tuning? I've never changed an exhaust on a car before, but on my bikes I always have to get a tune.

No light, no tuning. If you change the exhaust this actuator would just be totally removed with no issue. Otherwise just go in to the MyLink settings and set it to open all the time. No fuse to deal with on a 2018

Got this from Phastek on my ZLE... If not this AWE system, I would recommend Corsa as you're going to find the ZLE cruises at a much higher RPM and drone is an issue.

11-09-2018, 09:34 AM	#1
Filiper Drives: 2019 zl1 1le Join Date: Oct 2018 Location: Washington, MI Posts: 31	ZLE Exhaust Good Morning Guys, I recently purchased a 19 ZLE and while I absolutely love the car, I'm a bit disappointed in the OEM exhaust system in terms of noise. I really wish it could be a bit louder without being obnoxious. While I've reviewed the forums on custom systems, do any ZLE owners have any recommendations? Will void my warranty?

11-09-2018, 01:11 PM	#7
tomster RedLine Drives: 2022 ZL1 1LE Join Date: Dec 2012 Location: Chicago area Posts: 792 View My Garage	remove your rear cats for $60 bucks... Slight increase in sound at low cost, if you still need more sound go with a axle back __________________ 2018 GMC 2500 "Blue" (Sold) 2018 ZL1 1LE Hyper Blue" (Sold) 2018 CTS-V "Black" (Sold) 2022 GMC 2500 "Blue" 2022 ZL1 1LE 6spd "Rapid Blue" 2023 ZL1 1LE Auto Rapid Blue (ordered)

11-09-2018, 02:44 PM	#9
SJFGTO Oh Oh it's Friday Night! Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018 Location: Walton Woods Posts: 1,061	An axle back or cat back will improve sound and will not void your warranty nor will it trigger a CEL regardless if you eliminate the NNP. Eliminating the secondary cats could technically be claimed by a dealer as a warranty killer, but frankly that would be incorrect in nearly every instance since they are not integral to the emissions control system and should not trigger a cel if removed. No tune necessary for a cat back or axle back. Lots of great threads and videos on exhaust options. __________________ 2018 Camaro ZL1 1LE NFG; ARH 2” headers, catless mids, ARH full exhaust, Lingenfelter 18% lower pulley, ATI Harmonic Balancer, Roto-fab CAI, EE-catch can, TM ported TB, NX Lid, BMR strut tower brace. Aeroforce dual pod interceptor gauges. Tuned by Vengeance Racing!!! 644 HP @ 6250 rpm / 689 trq @ 3660 rpm Four that wanna own me Two that wanna stone me One says she's a friend of mine...

11-09-2018, 09:56 AM	#2
dmcmahan60 Drives: 2017 SS Join Date: Jan 2018 Location: Arab, AL Posts: 757 View My Garage	Look into AWE exhaust from the RDPstore.com with Dynosteve on this forum. He will take care of you.

11-09-2018, 10:19 AM	#6
JDP Sales Drives: Chevys at the limit Join Date: Nov 2010 Location: SLC, UT Posts: 9,621	We would suggest also looking at the Borla S-Type systems as well. Amazing sound and at a great price. Doing a cat back or axle back system will not void your warranty nor will you need a tune. It's a bolt on and go mod . Let us know if you have any questions on pricing! Always happy to help. Cheers, Kayla L. 801.545.4215

11-09-2018, 01:57 PM	#8
mdmoore23 Drives: 2017 ZL1 Join Date: Jun 2012 Location: Graniteville,SC Posts: 645	Kooks Axleback. It can be purchased for under $700. It has no valves, hit to most that's a non issue. I pulled the fuse for my valves as soon as I got the car home so i never used them anyway. Take a listen To my car here. https://youtu.be/nyTESHFm5Dw

11-10-2018, 11:17 AM	#11
jvandy50 Drives: 18 ZL1-1LE, 10 JKU Join Date: Jul 2018 Location: AR Posts: 584	I’m in the same boat OP. Needs more volume. And the funky way the flaps still close sometimes in the modes i think they shouldn’t, well, i may just do away with them...that’s annoying. May remove the fuse first and make sure i don’t miss it.

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