Annoying Vibration with After Market Exhaust - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

cshaw2049 · 08-11-2009, 07:35 PM

I recently had a cat back exhaust installed on my V6 and am now regretting it (a little). The sound is generally pretty good. I realized going in that the car is a V6 so it will never sound like a V8. My problem is that there is a very annoying vibration inside the cab in the 2000 to 3000 rpm range. The system does have resonators installed that look very similar to the stock setup.

My question is for those of you that have installed aftermarket cat back systems, have you noticed an objectionable vibration or harmonic in the cab.

For now I do not want to mention the manufacture of my system, because I am trying to get them to help me fix this. And to be honest I do not really blame them, this was their first V6 so my car was a bit of a test mule for them.

Thanks.

fredbo · 08-11-2009, 07:56 PM

i wanna hear the exhaust

Grandeos · 08-11-2009, 08:00 PM

I ran into that EXACT SAME PROBLEM with my last car. Ever since I put on the cat-back system I had a annoying vibration that would occasionally pop up when I was at idle, right underneath me. It drove me nuts. I thought it was the cat itself, so I even replaced that, with no luck.

I ultimately just chalked it up to being "aftermarket", because no matter what, best fitment will always be OEM.

Xmicro_SS · 08-11-2009, 08:04 PM

It is usually because the installer mounts it too tight to the undercarriage. When the pipes vibrate and move under load it chatters into the heat shield.

This happened in my 2007 SKY Redline when I installed the Magnaflow Cat Back System. The solution...............I went under the car where I heard the noise, felt for the tightest spot, put a cloth over a crow bar and carefully pried down. PROBLEM SOLVED, and 2 years later it never came back!

Seriously!

cubican · 08-13-2009, 03:57 PM

The Problem that your having is call DRONE and is not going to go away unles you change your mufflers to Corsas.

LadyinBlue · 08-13-2009, 06:29 PM

Hmmm, cubican must be a Corsa fan :-) The Corsa folks pride themselves on offering a virtually drone-free cabin experience with their exhaust system (part of why it's so expensive) and that's why I went with their exhaust. I do mostly longer distance driving and drone would drive me cRaZy!

cshaw2049 · 08-13-2009, 11:55 PM

Quote:

Originally Posted by cubican

The Problem that your having is call DRONE and is not going to go away unles you change your mufflers to Corsas.

I tend to agree with you. Thanks.

drivingincamaro · 08-14-2009, 12:02 AM

Quote:

Originally Posted by cubican

The Problem that your having is call DRONE and is not going to go away unles you change your mufflers to Corsas.

i thought drone was a noise not a vibration?

like when your on a highway going 60 mph youll hear a non stop noise

LadyinBlue · 08-14-2009, 05:49 AM

The vibration causes the noise= drone. Because you have the one you get the other.

JesseJames · 08-14-2009, 08:53 AM

Quote:

Originally Posted by drivingincamaro

i thought drone was a noise not a vibration?

like when your on a highway going 60 mph youll hear a non stop noise

it could be drone OR, your exhaust was not put on correctly. If your having this problem at idle and lower speeds, then it's incorrect installation

cshaw2049 · 08-14-2009, 11:24 AM

It is drone. Only happens under load between about 2200 and 2800 rpm. Usually when cruising on the highway going up a slight incline.

CamaroBAMF28 · 08-14-2009, 12:50 PM

i love when your exhaust has a loud drone

deljaso · 08-14-2009, 01:14 PM

Quote:

Originally Posted by cshaw2049

It is drone. Only happens under load between about 2200 and 2800 rpm. Usually when cruising on the highway going up a slight incline.

What kind of exhaust did you have put on?

HaveBlue · 08-14-2009, 07:57 PM

Every muffler has a resonance zone. The trick is to tune the muffler into an rpm range that is above or below the cruise rpm of the car. Affected by case length type of baffling etc.

08-11-2009, 07:35 PM	#1
cshaw2049 Drives: 2010 Camaro 2LT / RS M6 ABM Join Date: Apr 2009 Location: Escondido, CA Posts: 136	Annoying Vibration with After Market Exhaust I recently had a cat back exhaust installed on my V6 and am now regretting it (a little). The sound is generally pretty good. I realized going in that the car is a V6 so it will never sound like a V8. My problem is that there is a very annoying vibration inside the cab in the 2000 to 3000 rpm range. The system does have resonators installed that look very similar to the stock setup. My question is for those of you that have installed aftermarket cat back systems, have you noticed an objectionable vibration or harmonic in the cab. For now I do not want to mention the manufacture of my system, because I am trying to get them to help me fix this. And to be honest I do not really blame them, this was their first V6 so my car was a bit of a test mule for them. Thanks.

08-11-2009, 08:00 PM	#3
Grandeos Automotive Designer Drives: 2011 Camaro 2SS/RS (LS3) Join Date: Jul 2009 Location: Detroit, MI Posts: 832	I ran into that EXACT SAME PROBLEM with my last car. Ever since I put on the cat-back system I had a annoying vibration that would occasionally pop up when I was at idle, right underneath me. It drove me nuts. I thought it was the cat itself, so I even replaced that, with no luck. I ultimately just chalked it up to being "aftermarket", because no matter what, best fitment will always be OEM. __________________ 2011 Camaro 2SS/RS LS3 (SIM/BLK)

08-11-2009, 08:04 PM	#4
Xmicro_SS Thank You GM Drives: Sky Redline & Camaro 2SS/RS Join Date: Mar 2009 Location: Las Vegas, NV Posts: 2,876	It is usually because the installer mounts it too tight to the undercarriage. When the pipes vibrate and move under load it chatters into the heat shield. This happened in my 2007 SKY Redline when I installed the Magnaflow Cat Back System. The solution...............I went under the car where I heard the noise, felt for the tightest spot, put a cloth over a crow bar and carefully pried down. PROBLEM SOLVED, and 2 years later it never came back! Seriously! __________________ ITS HERE! : 2010 Camaro 2SS / 6 Speed Manual (No other way) / Silver Ice Metallic / Inferno Orange Interior Accent / RS Package / Polished Wheels / SOLO MACH X CAT BACK

08-14-2009, 07:57 PM	#14
HaveBlue Drives: CTS/CAMARO Join Date: Jun 2009 Location: SEMA/PERF INDUSTRY GUY Posts: 488	Every muffler has a resonance zone. The trick is to tune the muffler into an rpm range that is above or below the cruise rpm of the car. Affected by case length type of baffling etc. __________________ "everyone wants to go to heaven. but nobody wants to die" "you gotta pay to play" SEMA PICTURES-PARTS & CARS http://www.pbase.com/haveblue/sema_2009

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08-11-2009, 07:56 PM	#2
fredbo Drives: black 2010 LS Join Date: Jan 2009 Location: mississippi Posts: 219 View My Garage	i wanna hear the exhaust

08-13-2009, 03:57 PM	#5
cubican Drives: 2010 Camaro ss Join Date: Jul 2009 Location: Texas Posts: 12	The Problem that your having is call DRONE and is not going to go away unles you change your mufflers to Corsas.

08-13-2009, 06:29 PM	#6
LadyinBlue Drives: 260HP/242TQ Join Date: May 2009 Location: Dayton, Ohio Posts: 707	Hmmm, cubican must be a Corsa fan :-) The Corsa folks pride themselves on offering a virtually drone-free cabin experience with their exhaust system (part of why it's so expensive) and that's why I went with their exhaust. I do mostly longer distance driving and drone would drive me cRaZy!

08-14-2009, 05:49 AM	#9
LadyinBlue Drives: 260HP/242TQ Join Date: May 2009 Location: Dayton, Ohio Posts: 707	The vibration causes the noise= drone. Because you have the one you get the other.

08-14-2009, 11:24 AM	#11
cshaw2049 Drives: 2010 Camaro 2LT / RS M6 ABM Join Date: Apr 2009 Location: Escondido, CA Posts: 136	It is drone. Only happens under load between about 2200 and 2800 rpm. Usually when cruising on the highway going up a slight incline.

08-14-2009, 12:50 PM	#12
CamaroBAMF28 Drives: Black 2LT RS Join Date: Jun 2009 Location: Edison Posts: 232	i love when your exhaust has a loud drone