04-23-2021, 08:41 AM | #1 |
Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017
Location: North Ga
Posts: 1,786
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I'm 10db over the limit at my local track
I consistently get black flagged at Atlanta Motorsports Park for being too loud. The limit is 98db and I'm at 108. My exhaust is stock from the Kooks cat back, all mods are in my signature.
I run on multiple tracks without issue and would just pass on AMP events if the track wasn't literally in my backyard. The car won't let me run in Tour mode. It throws codes and goes into limp mode after a lap or two. It will rip for 30 minute sessions in track or sport modes. Any recommendations on how to quiet the car down just a bit? It's nearly as quiet as stock now except at WOT.
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Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned |
04-23-2021, 08:46 AM | #2 |
Drives: 2019 SS 1LE Join Date: Jun 2018
Location: Louisville, KY
Posts: 95
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have you tried any sort of laguna pipes? really might need a resonator welded in for a permanent fix.
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04-23-2021, 08:47 AM | #3 |
Drives: 2023 CT5 Blackwing Join Date: Sep 2016
Location: Orlando
Posts: 1,617
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2017 HBM SS 1LE
Sold 2023 Wave Metallic CT5-V Blackwing M6 |
04-23-2021, 09:45 AM | #4 |
Drives: 2021 LT1 Join Date: Aug 2020
Location: Chicago area
Posts: 286
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04-23-2021, 09:52 AM | #5 |
Drives: '23 Hyundai Kona N, '24 VW GTI Join Date: Aug 2019
Location: Sacramento, CA
Posts: 404
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I bought some nice Laguna pipes from JRL1LE. I would PM him and find out where he got his. He's probably getting some new ones for the ZL1 he ordered.
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04-23-2021, 11:30 AM | #6 |
Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017
Location: North Ga
Posts: 1,786
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Thanks guys, I was considering some Laguna pipes. I'll pm JRL1LE and see where he got his.
It's really hard to believe that my car is so freaking loud. There must have been 50 cars at AMP yesterday. Everything from clapped out Miata's to a McLaren 720s and I was the only one getting flagged.
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Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned |
04-23-2021, 12:42 PM | #7 | |
Geezer_loves_Camaros
Drives: 2018 2SS, Black, A8 Join Date: Dec 2018
Location: Austin
Posts: 224
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Quote:
https://www.camaro6.com/forums/showt...ighlight=2650r 98 db seem low, but guess it is what it is. You might want to check this out. Another member on the thread mentioned dropping from low 100's to below with the magnaflow addition. I picked up one myself and hopefully going to have it installed this weekend. my car is simply too loud for my tastes with the headers and hiflows.... Albeit, if the laguna pipes work, maybe a cheaper solution for the only track you're having the problem with. lol |
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04-23-2021, 06:30 PM | #8 |
Drives: 2017 SS 1LE Join Date: Oct 2015
Location: San Ramon, Ca
Posts: 550
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This was my setup, I got them from another SS 1LE owner local to me. He said a local muffler shop did it for about $70-80. Here are some pics. Car was stock, I passed no problem on 90 db days.
--------- John
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John L
-------- Prior Cars: 91 Z28, 02 SS, 03 Z06, 15 SS 1LE, 17 SS 1LE, 04 Z06, 17 C7 Grand Sport |
04-23-2021, 09:09 PM | #9 |
Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018
Location: NorCal
Posts: 594
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Get rid of the quad tip NPP and put the non NPP dual tip muffler on. Sure makes it quiet. I run the borla atak NPP with valves closed at the 103 db tracks, the stock dual tip suitcase is drastically quieter than that. I'm heads cam headers, car is loud!!! The muffler is such an easy swap just a couple 2 3/4" butt clamps.
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04-24-2021, 09:19 AM | #10 | |
Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017
Location: North Ga
Posts: 1,786
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Quote:
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Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned |
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04-24-2021, 09:24 AM | #11 |
Drives: Hyper Blue 2016 2SS 6M Join Date: Sep 2017
Location: North Ga
Posts: 1,786
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Thanks, John and Matt for the info on Laguna pipes. I think I'll get some made up before my next session at AMP. If they helped quiet John's car down to under 90db, they should get me under 98.
__________________
Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned |
04-24-2021, 10:13 AM | #12 |
SoCal Camaro5 Race Team
Drives: 2021 Shadow Grey Camaro 2SS 1LE Join Date: Mar 2010
Location: SO CAL
Posts: 14,288
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Stock npp tested by Lethal Camaro at 94db. Heard about one guy pulled over for loud exhaust in sport mode even
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04-24-2021, 05:56 PM | #13 | |
Drives: 17 hyper blue 2SS M6 Join Date: Mar 2018
Location: NorCal
Posts: 594
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Quote:
I put a remote control on the valves so I have complete control of them. Connected it to my garage door opener built into the car, so at the track I just close the valves and they stay closed. |
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04-26-2021, 09:38 AM | #14 |
Drives: '21 V6 1LE Join Date: Jul 2020
Location: NE
Posts: 263
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