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12-03-2017, 01:40 AM
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#1 |
 
Drives: 2015 camaro 2SS Join Date: Nov 2017
Location: Shaw afb, SC
Posts: 62
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Headers gotten quiet?
Kind of strange but I installed speed engineering 1 7/8" long tubes with cat delete and the first week they were amazing. Sound was extremely loud and had great crackle and backfires. But now they're quiet, almost more so than when stock and it's infuriating. Is it normal? How does this even happen and is there anyway to get the sound back? Thanks guys.
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12-03-2017, 04:49 AM
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#2 |
          Drives: LT W/2LT,blue metallic Join Date: Jul 2016
Location: central florida
Posts: 4,915
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maybe youre going deaf?had a hotrod pontiac for 25 years with duals and headers.will be picking up my new hearing aids next month.
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12-03-2017, 07:04 AM
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#3 |
Drives: 2011ss/rs camaro Join Date: Sep 2011
Location: florida
Posts: 1,261
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Is the cat missing?
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 . OBX LTH,Rotofab,Magnuson Heartbeat.AEM wideband, HP Tuners |
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12-03-2017, 07:22 AM
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#4 |
Drives: 2012 M6 Camaro SS (RIP) Join Date: Nov 2014
Location: Virginia
Posts: 1,684
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My headers themselves aren’t letting as much exhaust/valvetrain noise out but my exhaust is still loud as hell when I get on it
You’re probably just getting use to it
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Speed engineering 1 7/8 LTs, CAI inc Cold Air Intake, offroad connectors, Solo performance axle back with J pipes, tune, and in need of a driver mod LOL
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12-03-2017, 08:04 AM
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#5 |
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old school chevy rodder
Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012
Location: Oregon
Posts: 5,587
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That and the tune you have most likely is trying to eliminate the DECEL POPPING and your lack of CATs does not help......Look to the rest of your exhaust..... headers did not MORPH like a power ranger....
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 2021 Wild Cherry ZL1 A10, Sunroof, Data, Carbon, Nav, RotoFab Dry CAI, Elite x2, Borla ATK, Driveshaft shop |
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12-03-2017, 10:47 AM
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#6 |
Drives: 2010 Inferno Orange 2SS/RS Join Date: Apr 2010
Location: Clermont, IN
Posts: 3,297
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Has it been properly tuned?
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2010 Inferno Orange 2SS/RS M6 Black Leather, Sun Roof, OBX Headers, Borla touring axle back, Cold Air Inductions CAI , non synthetic fluids, BMR total bushing upgrade/1" lowering springs, DSE 32mm rear sway bar. GM fe4 shocks/struts/LCA's, AAM 3.91 diff, Vertini RFS1.8 20x9 +30. Conti ExtremeContact Sport 275/35/20. sjm autoprod ABL dash kit. Mike Norris tuned 413/419.
Avenging Orange: 43 years of not buying into the Hype........and damn proud of it!! https://youtu.be/9JD9it6SmB8 https://youtu.be/xmelTlEzI34 KICKING CANCERS ASS SINCE 2015!! |
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12-03-2017, 10:49 AM
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#7 |
Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016
Location: Spring Hill, FL
Posts: 4,575
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Headers + cat delete = hearing loss
Honestly though, I think you are maybe just getting used to it.
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2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI
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12-03-2017, 02:39 PM
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#8 |
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Drives: 2015 camaro 2SS Join Date: Nov 2017
Location: Shaw afb, SC
Posts: 62
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I thought the same but everyone at the local meets and friends says the same thing, it's much quieter than before. It is untuned and cats are deleted. Before it sounded very aggressive and now it's tame, even at start up. I'm active duty and my ears are very sensitive so that's not it either.
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12-03-2017, 02:40 PM
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#9 |
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Drives: 2015 camaro 2SS Join Date: Nov 2017
Location: Shaw afb, SC
Posts: 62
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I've noticed the idle doesn't stay as high for as long when cold either lately.
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12-03-2017, 03:44 PM
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#10 | |
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Drives: 2012 M6 Camaro SS (RIP) Join Date: Nov 2014
Location: Virginia
Posts: 1,684
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Quote:
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Speed engineering 1 7/8 LTs, CAI inc Cold Air Intake, offroad connectors, Solo performance axle back with J pipes, tune, and in need of a driver mod LOL
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12-03-2017, 05:42 PM
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#11 | |
Drives: 2010 Black 2ss Camaro SS Join Date: May 2010
Location: Rochester Hills, MI
Posts: 1,062
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Quote:
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ZL1 10 spokes,Dart 388,ECS Supercharger 2200x, E85 Flex Fuel sensor, Dart 388 , B&M Tranny Cooler, Vigilante 4000 Triple Disc TC,Katech Ported Heads, Texas Speed Sheet Metal Intake, ECS Big Blower Cam,ID 1700s, Fore Triple Pumps, E85,ATI Super Dampner, KW V3 Coilovers, Pfadt front and rear sway bars,Pfadt Trailing arms and toe rods,ZL1 Rear Diff, RPM 6l90e level 10 Tranny, SW Long Tubes no cats,Nick Williams Boosted 102mm TB, Dr Phil Tune,Borla Atak
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12-04-2017, 07:30 AM
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#12 |
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Drives: 2015 camaro 2SS Join Date: Nov 2017
Location: Shaw afb, SC
Posts: 62
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Only codes thrown are for the rear 02's which aren't attached. And it is untuned
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12-04-2017, 09:00 AM
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#13 | |
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Drives: 2010 Black 2ss Camaro SS Join Date: May 2010
Location: Rochester Hills, MI
Posts: 1,062
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Quote:
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ZL1 10 spokes,Dart 388,ECS Supercharger 2200x, E85 Flex Fuel sensor, Dart 388 , B&M Tranny Cooler, Vigilante 4000 Triple Disc TC,Katech Ported Heads, Texas Speed Sheet Metal Intake, ECS Big Blower Cam,ID 1700s, Fore Triple Pumps, E85,ATI Super Dampner, KW V3 Coilovers, Pfadt front and rear sway bars,Pfadt Trailing arms and toe rods,ZL1 Rear Diff, RPM 6l90e level 10 Tranny, SW Long Tubes no cats,Nick Williams Boosted 102mm TB, Dr Phil Tune,Borla Atak
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12-04-2017, 11:23 AM
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#14 |
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Drives: 2015 camaro 2SS Join Date: Nov 2017
Location: Shaw afb, SC
Posts: 62
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Alright, thank you guys!
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