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04-21-2020, 04:36 PM
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#1 |
  Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018
Location: NorCal
Posts: 759
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Quieting this car
2017 SS, my car is LOUD... Headers, cam, NPP borla atak ... its loud.
I want to start tracking it, but due to the noise restrictions there is no way I'll ever be able to. I'm trying to think of relatively easy ways to quiet it down. I'm thinking about putting the factory non NPP on it, but I'm not even sure that will be enough. Maybe adding outlets pointing away from the sound meter also Has anyone ever tried packing the muffler? I don't care about how it'll sound, just don't want to create excessive back pressure, and to be under 103db. Any suggestions? Or experience packing a muffler? |
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04-21-2020, 04:40 PM
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#2 |
          
Drives: 2016 1ss camaro Join Date: Feb 2016
Location: 909
Posts: 10,138
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custom laguna pipes bro lol
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 16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS |
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04-21-2020, 04:50 PM
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#3 |
Drives: 2016 2SS Convertible Join Date: May 2012
Location: St. Louis, MO
Posts: 1,780
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Some have used the Borla Resonator part # 60608. I’m not sure if that’s enough to get you where you want to be.
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04-21-2020, 05:11 PM
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#4 |
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Drives: 2017 50th Camaro SS Join Date: Jul 2016
Location: Maryland
Posts: 525
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I have headers and Borla Atak without NPP. It was loud. Just did a cat delete and now it's insane.
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50th Anniversary Edition |Borla Atak and 60606 mid pipes| Kooks 1 7/8" | ProCharger Stage II |305/45/17 DRs | Circle D 3500 stall | LT4 fueling | Custom made Lowside Aux Pump | Alky Control Meth | DSX E85
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04-21-2020, 05:16 PM
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#5 | |
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Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018
Location: NorCal
Posts: 759
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Quote:
The Laguna pipes are an option, and probably have to happen no matter what else I try to do. I'd love to have just a simple muffler change handle most of this. I just ordered a sound meter to see exactly where I'm at. |
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04-21-2020, 05:26 PM
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#6 |
Drives: 2017 ZL1 Join Date: Jan 2017
Location: NJ
Posts: 926
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You'll never get there, stock exhaust barely meets most club standards
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2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)
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04-21-2020, 05:58 PM
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#7 | |
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Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018
Location: NorCal
Posts: 759
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Quote:
I'd like to get close, then figure out the laguna pipe part. |
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04-21-2020, 10:38 PM
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#8 |
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Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,346
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I'm back to all 4 cats (front two modded for flow), the Borla 60608 and the stock suitcase and at WOT my car (mainly engine) is lound.
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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04-21-2020, 10:56 PM
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#9 | |
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Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018
Location: NorCal
Posts: 759
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Quote:
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04-21-2020, 11:10 PM
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#10 | ||
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Drives: SS 6 speed of course Join Date: Jan 2016
Location: Hilo, HI
Posts: 4,346
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here is the ride with stock exhaust, LT with cats
here it is with stock exhaust (one primary cat delete) 3 cats still in stock header. here is me installing the Borla 60608 and the modified front cats:
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Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.
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04-21-2020, 11:23 PM
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#11 |
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Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018
Location: NorCal
Posts: 759
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Well Oldman, that leaves me little hope of getting under 103db without the Laguna pipes.
I sent an email to Borla to see what they'd recommend. |
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04-22-2020, 07:05 AM
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#12 | |
 
Drives: 2019 Camaro 1SS A10 Join Date: Nov 2015
Location: Tn
Posts: 465
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Quote:
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"Jesus said to them: I am the way, the truth and the life and no one comes to the Father except through me" John 14:6
2020 Mustang GT M6 2019 Camaro 1SS A10 E85/Pray tuned & ported IM/TB.**SOLD** 2018 Mustang GT A10 Kooks Lt's, E85 & Lund tune*SOLD* 2010 Camaro 2SS/RS M6 Silver- CAI, Bo-body, VRSP-2 cam, Kooks 1 7/8 Lt's w/cats, Magnaflow street CB(15089), QTP ovals, Elite can, Vengeance Racing tune. *SOLD* |
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04-22-2020, 08:53 AM
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#13 |
Drives: 2019 Camaro 1LE Shock Candy Join Date: Mar 2016
Location: Garage
Posts: 1,798
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You have a cam, good luck trying to make it quieter.
I suggest these for you, see pic.
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LT4 1.7 Supercharger snout ported & 100% Meth
103 Katech TB, KATECH Custom Heads, DSX In-line fuel TSP Headers, Spec P Super Twin Clutch, TSP EL C7 CAM Diamond Piston & Manley Rods, Roto Fab Big Gulp BTR Push Rods,LS7 Lifters, ARP, FI Chiller, Kirkey Seats SJM Line Lock, Hurst Pistol Grip. 747/739 RWHP street tune - 821/794 RWHP track tune 101 octane. 2014 Mini Cooper countryman S All4 M6 daily driver |
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04-22-2020, 09:01 AM
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#14 |
 Drives: 2019 SS Join Date: Apr 2020
Location: North Texas
Posts: 259
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SLP has some slip on mufflers that work awesome, I used it on my 4th gen Firebird when it was way to loud, check them out they should help.
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