01-22-2019, 08:50 AM | #1 |
Drives: 2019 Camaro ZL1 (manual) Join Date: Dec 2018
Location: GA
Posts: 44
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ZL1 exhaust/tune questions and opinions
Hi all. Proud new owner of a black 2019 ZL1. She's at the shop now getting ppf and window tint.
Looking at general ideas to get some more sound. I have a few questions.. I must pass emissions in my state. Will deleting 2nd cats hinder the emissions passing? I'm leaning towards an x-pipe and axle backs. Will I be able to keep the functionality of the exhaust mode tone change? Last but not least, what are my limitations for stock tune parameters.. I want to do exhaust, Cai, and probably a mild ported throttle body to help with the throttle respond. Would I be ok with all of these bolt ons? Thanks Ben |
01-22-2019, 10:03 AM | #2 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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No tune needed for TB, CAI and Exhaust. If you delete PRIMARY cats and/or add Headers, then you will need a tune.
Any axle back is going to remove the OEM valved exhaust. However, there are some exhaust companies, namely Borla, that DO have valves on them and operate like stock. Namely Borla has this setup. Then go for a Roto-fab CAI and either a Katech or Tony Mamo TB and you'll be set. No idea on the emissions in your state. Note that any cat-back exhaust that does not delete secondary cats will require you to cut the factory exhaust. |
01-22-2019, 10:19 AM | #3 |
Drives: 2018 Camaro ZL1 A10 Join Date: Nov 2018
Location: West Chester, PA
Posts: 462
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Give us a call @ the number below. We cans set you up on a great deal with something like Borla that keeps your NPP.
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01-22-2019, 10:23 AM | #4 |
Drives: 2018 ZL1 Join Date: Jul 2017
Location: Vero Beach FL
Posts: 114
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I put a TB, cold air, Borla Attack cat back exhaust , no check engine light and it runs great.
Best of all warranty is still good. |
01-22-2019, 10:59 AM | #5 |
Drives: 2019 Camaro ZL1 (manual) Join Date: Dec 2018
Location: GA
Posts: 44
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Great advice guys, thank you! Looking forward to getting some parts slapped on this beast!
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01-22-2019, 02:39 PM | #6 |
Drives: Grandad's C2 L89 Join Date: May 2017
Location: 20*51.50N 156*29.60W
Posts: 1,711
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I believe that the secondary cats are to meet CARB level emissions requirements.
CARB required states are CA, CT, DE, ME, MD, MA, NJ, and NM manufactured 2011 and later. CARB (2016 and later) now also includes NY, OR, PA, RI, VT, WA and DC. GA is non CARB. You SHOULD have no problem with emissions testing. I would however double check your state regs.
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2018 ZL1 1LE sw/PDR
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01-22-2019, 03:46 PM | #7 |
Oh Oh it's Friday Night!
Drives: 2018 ZL1 1LE Nightfall Gray Join Date: Jan 2018
Location: Walton Woods
Posts: 1,061
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You will not need the secondary cats if you are in a county in Georgia that requires emissions testing. I live in Georgia.
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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... |
01-22-2019, 03:51 PM | #8 |
Drives: Gen V Viper GTS Join Date: Jan 2018
Location: SoCal
Posts: 260
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My '18 ZL1 A10 has Rotofab Intake (normal, dry) and Borla S-Type Exhaust (complete from Secondary CATS/Resonators back). Awesome sound, retains sound Valves and no codes. Highly Recommended! Both adds appear to be excellent quality!
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01-22-2019, 06:08 PM | #9 |
TB and CAI
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01-22-2019, 08:55 PM | #10 |
Drives: 2018 ZL1 A10/2018 GT350R #JR603 Join Date: Jan 2017
Location: Dublin CA
Posts: 819
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Borla S-Stype is a factory option on many GM models. Best sounding exhaust & the NPP Active exhaust stays intact. It is not inexpensive by any means but you get what you pay for. I have a Ported T-Body, Roto-Fab CAI & the Borla exhaust. Car is fast as F.
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2018GT350R+2018 ZL1 "Red Hot" A10 w/ PDR, Nav, Carbon Fiber Hood insert, Carbon Fiber Dash Insert, Carbon Fiber Fuel Dior & Sun Roof. T/M T-Body, Roto Fab & Borla S Type.
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01-22-2019, 10:06 PM | #11 |
Drives: 2019 ZL1 1LE Join Date: Jan 2019
Location: Pacific Northwest
Posts: 129
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I'm thinking of getting the Borla ATAK. I like that it'll have the exhaust valves. Told the wife I'd wait until next month since I'm getting the PS4S mounted tomorrow.
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01-23-2019, 07:01 AM | #12 |
Drives: 2017 1LE Join Date: Nov 2017
Location: Brooks, GA
Posts: 697
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Sig...👀
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'17 Bright Yellow 1LE. PDR, STB, !CAGS
Borla 60606, 11925. Tony Mamo ported TB, ROTOFAB, !Sound Tube |
01-23-2019, 02:18 PM | #13 |
Just another car Jones!
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Boys, gotta be honest, I just want the sound, requested below. I am a car person but clueless re: exhaust....deletes, and what to delete.....cat back vs axle back...Lost boy here.
I am in the look stage and so confused with so many options. Personally, I had the Shelby gt350 and the OPEN exhaust was the tops!!!! I would love th get something like that. I am thinking Cat delete, or muffler delete or resonator delete.....something simple and easy that keeps the NPP working while still getting the deep throated sound. I want it noticeable and growling but not totally obnoxious |
01-23-2019, 02:33 PM | #14 | |
Drives: Gen V Viper GTS Join Date: Jan 2018
Location: SoCal
Posts: 260
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