07-28-2022, 08:11 AM | #1 |
Drives: Chevrolet Camaro Join Date: Jul 2022
Location: GA
Posts: 2
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Second cat delete exhaust noise
Just recently had a shop remove my second cats on my 2020 camaro ss. Shop screwed it up the first time (exhaust leak/hissing noise, engine light,) and had to take it back for them to fix it. They fixed it, said it sealed and checked for exhaust leaks, but still have a weird "hissing noise". I sent them a video (dont know how to attach video) explaining the sound but they said it's normal engine noise. Just trying to find out if it truly is engine noise or another exhaust Leak. Anyone else with second cat delete with this noise?
Last edited by SCCamaro22; 07-28-2022 at 09:19 AM. |
07-28-2022, 02:35 PM | #2 |
Drives: 2017 1SS 6spd Join Date: Jan 2011
Location: Utah
Posts: 2,869
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I was fortunate enuff to grab a Borla bolt-on 2nd cat delete X-pipe (no longer available) and there is no hiss with a 2nd cat being gone.
I'd get a 2nd (no pun intended) opinion. |
07-28-2022, 04:40 PM | #3 |
Drives: 2018 Camaro SS vert Join Date: Oct 2020
Location: CT
Posts: 449
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I never noticed any hiss on mine after the delete
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07-28-2022, 05:10 PM | #4 |
Drives: 2019 Camaro 2SS Vert Join Date: Apr 2020
Location: BC, Canada
Posts: 174
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I'm late to the party but why did Borla discontinue this part? was it failure related or emission related? Seems like there is still a market for it.
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07-28-2022, 05:19 PM | #5 | |
Drives: 2023 ZLE M6 Join Date: Jun 2022
Location: California
Posts: 171
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Quote:
It's emissions related. Corsa also stopped offering the secondary cat delete pipe.
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2023 ZLE M6 Borla S-Type Catback | Rotofab CAI | Soler TB | MPI Lid |
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07-28-2022, 08:25 PM | #6 |
Drives: 2018 Camaro ZL1 Join Date: Nov 2009
Location: Central Arkansas
Posts: 1,214
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Sounds like a botched job just take it somewhere else and have them fix it if they claim nothing is wrong some people suck at customer service.
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2018 ZL1 M6 NGM
PPF and Ceramic coating IG: NGMZL1 2010 2SS RS --- SOLD MODS- Performance: BMR trailing arms & bushings | BMR Toe links | X-pipe | Muffler delete | Vmax ported throttle body | Apex "strong" MAS | Vararam CAI | Apex catch can | Kooks Headers | Kooks HF Cats | Dyno tuned by GPI 417 RWHP 409 FT-Lb Cosmetic: painted Zl1 rockers | Zl1 grill | AAC side markers | AAC LED backup lights | windows tint | taillight tint | JDP tow hook | all emblems blacked out | LED fogs |
07-30-2022, 03:55 PM | #7 |
Drives: 2018 Camaro ZL1 Join Date: Nov 2009
Location: Central Arkansas
Posts: 1,214
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update?
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2018 ZL1 M6 NGM
PPF and Ceramic coating IG: NGMZL1 2010 2SS RS --- SOLD MODS- Performance: BMR trailing arms & bushings | BMR Toe links | X-pipe | Muffler delete | Vmax ported throttle body | Apex "strong" MAS | Vararam CAI | Apex catch can | Kooks Headers | Kooks HF Cats | Dyno tuned by GPI 417 RWHP 409 FT-Lb Cosmetic: painted Zl1 rockers | Zl1 grill | AAC side markers | AAC LED backup lights | windows tint | taillight tint | JDP tow hook | all emblems blacked out | LED fogs |
07-30-2022, 04:25 PM | #8 |
Drives: Chevrolet Camaro Join Date: Jul 2022
Location: GA
Posts: 2
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Sorry for not updating been a hectic schedule. I took the car somewhere else and truly saw how bad the first shop did (borderline dangerous). I'll post the pictures of the before and after. I'm in the process of getting a refund and the car sounds amazing now! Thanks for the help! Made my decision to go with someone else easy!
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07-30-2022, 05:59 PM | #9 |
Drives: 2023 LT1 A10 Join Date: May 2017
Location: Palma Sola, FL
Posts: 141
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Looks great now. I've dealt with hackjobs from previous owners on cars before. Not fun. Glad you got it fixed up.
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2023 LT1, A10, NPP, Tech, Recaros, BVFKQ6 (Ordered 6/24, TPW 7/25, Built 8/1, Picked Up 10/3)
Past: 2017 1SS A8, 1998 SS M6, 1995 Z28 M6 |
07-31-2022, 12:58 PM | #10 |
Drives: 2017 1SS 6spd Join Date: Jan 2011
Location: Utah
Posts: 2,869
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OMG, LOL funny if it weren't so sad! Can you say "amateur" welder?
Good ear for picking up that "hiss"! |
08-10-2022, 08:48 PM | #11 |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,201
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Looks like they either ran out of gas and switched to flux core wire (even if your a "good" welder flux core will always look like crap) or like someone else said they just had no idea what they were doing.
Besides that how did it sound after (when it was done properly of course) compared to stock? or was it stock before? NPP? |
08-11-2022, 12:37 AM | #12 | |
Drives: 2024 Black ZL1, M6 Join Date: Mar 2014
Location: Murrieta, CA
Posts: 324
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Quote:
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08-11-2022, 07:31 AM | #13 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 1,992
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That's an insane weld job holy cow
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08-11-2022, 08:42 AM | #14 |
Drives: 2018 Camaro SS vert Join Date: Oct 2020
Location: CT
Posts: 449
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Damn that first job was done poorly
Yours now looks just like my 2nd cat delete
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Tags |
exhaust camaro exhaust, exhaust leak, second cat delete |
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