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05-03-2023, 05:37 PM
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#1 |
 
Drives: 2023 Riverside Blue 2SS Join Date: Sep 2022
Location: Denver,CO
Posts: 144
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Will Kooks Longtube Headers with Green Cats throw a CEL?
I’m thinking of paying a little extra for the Green Catted Longtube headers for the SS and running with a stock tune for a while will it throw a code?
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05-03-2023, 06:29 PM
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#2 |
          
Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016
Location: Georgia
Posts: 5,813
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Yes most definitely. You need to have the car tuned when installing headers.
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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.
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05-03-2023, 07:11 PM
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#3 |
 
Drives: 2022 Camaro 2SS 1LE Join Date: Nov 2021
Location: NC
Posts: 275
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I drove my car for a few days before it threw a CEL but it eventually will. And when I say a few days my car is a garage queen so its only driven on weekends mainly so probably 3 days tops before it happened.
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p1sc1 factory box w/ stage 2 intercooler, Lt4 fueling, JMS BAP, lt2 intake, kooks 1/78 longtube headers w/ h/f cats, alky meth kit, thpsi port injection
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05-03-2023, 08:03 PM
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#4 |
Drives: 2016 2SS Convertible Join Date: May 2012
Location: St. Louis, MO
Posts: 1,711
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In case it matters where you live, it will probably set a failure code that will cause the car to fail an emissions inspection too.
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05-03-2023, 08:04 PM
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#5 |
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Drives: 2023 Riverside Blue 2SS Join Date: Sep 2022
Location: Denver,CO
Posts: 144
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I’m registered in AK so I’m not worried about that part
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05-03-2023, 08:25 PM
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#6 |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,757
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Best way is to tune out potential issues BEFORE you install the new hardware. Then tweak the tune for air/fuel, timing, etc after the installation.
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
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05-04-2023, 05:11 PM
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#7 |
 
Drives: 2016 1SS Join Date: Apr 2012
Location: Houston, TX
Posts: 3,817
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The Kooks with either green or regular cats is a great option but yes you will definitely need to tune before or at the time of installation to prevent CEL and get you air, fuel, and timing dialed in right.
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