Vibration and humming sound normal ? After xpipe & GMPP exhaust install - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Maverick1776 · 03-08-2014, 12:26 AM

I have a 2013 2LS.
I just had a shop install a magnaflow xpipe and GM performance exaust.
When the car is in idle it sounds great. When you hit the accelerator, you get some pretty loud vibration/humming noise, to the point where your ears feel muffled. Maybe I'm just not used to it.
From inside the car, it sounds like a Honda after someone adds a performance exaust. Kind of obnoxious. Maybe there's an opening near the weld points.
The only engine performance upgrade part I have is a K&N CAI Typhoon.

Going to take it back to the shop that installed it just to be sure the pipes are not making contact with the frame.
Any other ideas to what may be causing this ?

Eddiefuzz · 03-08-2014, 11:05 AM

You have a GMPP catback or just the mufflers/axelback? I have to ask, why add the Magnaflow x pipe, when the GMPP exhaust catback comes with one? That's the exhaust I have and love, with no drone.

Maverick1776 · 03-08-2014, 01:13 PM

Just the axelback. I still have the factory pipes, with the 4 cat converters near the engine.
It's the GMPP axelbacks. Rebadged borlas. I'm
A noob, it's only the chrome parts with the GM Performance badging and embossed Chevy logo on the tips.
So that's the term for the humming noise ?
Droning ?
That's what it sounds like inside. Maybe the xpipe is a bit much ?

Eddiefuzz · 03-08-2014, 02:28 PM

I have the Borla version of the GMPP exhaust in a catback. There isn't any drone with it. It sounds like something came loose and is touching. There shouldn't be a rattling, the seat might vibrate little more, nothing to excessive, like a seat messager on low. Did you think this combo up? The Magnaflow Resonated Xpipe "Reduces" Drone, it doesn't cause it. I'll tell ya, you can get the catback pipes for the GMPP to add to your system for $400 on Amazon.com.

Maverick1776 · 03-08-2014, 02:59 PM

Sorry for the photo quality. That's what I have.
The last photo shows the xpipe I have.
All I know, is that the droning is bad. It sounds like a rice burner.
Monday I'll be taking it back to the shop, so they can find out what it is.

Wingsfan · 03-08-2014, 09:18 PM

When I got my mrt v1's they didn't clamp one side right. It vibrated and rattled so much it was sickining.

Maverick1776 · 03-09-2014, 12:02 AM

These were welded on. No clamps used.

Can't_C_Me · 03-09-2014, 07:41 AM

You got the regular Magnaflow x pipe. The V6 from what I've heard and been told sound best with the Magnaflow Resonated X pipe.

Sent from my Samsung Galaxy Note 3

cntryman77 · 03-09-2014, 07:44 AM

hard to tell from the pics, did they leave or remove the factory resonators?

Sent from my iPhone using Tapatalk

shrinkdoc · 03-09-2014, 02:16 PM

Quote:

Originally Posted by Can't_C_Me

You got the regular Magnaflow x pipe. The V6 from what I've heard and been told sound best with the Magnaflow Resonated X pipe.

Sent from my Samsung Galaxy Note 3

Yep Resonated X-pipe is what you needed. Not a basic X-pipe. Its a whole different godlike experience.

spyderbuddy · 03-09-2014, 02:36 PM

Yep sounds like you got the DREADED DRONE issue, The V6 exhaust upgrade requires the Magnaflow Resonated X Pipe not just and X Pipe.

If I'm not missinformed the L99 is in this catagory also. You got to run a Resonator
LS3 with straight pipe and H pipe just sounds bad A$$.

Maverick1776 · 03-09-2014, 02:55 PM

Thanks for all the responses. Starting to learn more on what is what.
A resonator is different from a cat converter ?
The 4 small stock cat converters are still there.

Since it's pretty annoying driving the car as is.
If they don't carry resonated xpipes, should I just go back to the stock pipes that were there before?
Thanks again.

Maverick1776 · 03-12-2014, 01:21 AM

Picked up a Magnaflow resonated x-pipe.
Installing it tomorrow. I will let you know the outcome.
And I will be selling the current x-pipe that I have now.

mrpyle · 03-12-2014, 09:09 AM

Quote:

Originally Posted by Maverick1776

Picked up a Magnaflow resonated x-pipe.
Installing it tomorrow. I will let you know the outcome.
And I will be selling the current x-pipe that I have now.

I originally installed the MRT V1. And it was quite loud inside the car. To the point of making my ears ring with the drone.

Got the Res X Pipe ... dumbed it down quite a bit. Still a little drone, but no where near as bad.

The factory resonators are behind the x-pipe, or behind where the h-pipe was. You have the cats, h-pipe (or x), then the factory resonators, then your axle back system.

I'm still considering removing the factory resonators. Not sure what the outcome will be though.

03-08-2014, 12:26 AM	#1
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	Vibration and humming sound normal ? After xpipe & GMPP exhaust install I have a 2013 2LS. I just had a shop install a magnaflow xpipe and GM performance exaust. When the car is in idle it sounds great. When you hit the accelerator, you get some pretty loud vibration/humming noise, to the point where your ears feel muffled. Maybe I'm just not used to it. From inside the car, it sounds like a Honda after someone adds a performance exaust. Kind of obnoxious. Maybe there's an opening near the weld points. The only engine performance upgrade part I have is a K&N CAI Typhoon. Going to take it back to the shop that installed it just to be sure the pipes are not making contact with the frame. Any other ideas to what may be causing this ? Last edited by Maverick1776; 03-08-2014 at 02:05 AM.

03-08-2014, 01:13 PM	#3
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	Just the axelback. I still have the factory pipes, with the 4 cat converters near the engine. It's the GMPP axelbacks. Rebadged borlas. I'm A noob, it's only the chrome parts with the GM Performance badging and embossed Chevy logo on the tips. So that's the term for the humming noise ? Droning ? That's what it sounds like inside. Maybe the xpipe is a bit much ? Last edited by Maverick1776; 03-08-2014 at 01:30 PM.

03-08-2014, 09:18 PM	#6
Wingsfan Drives: Synergy Camaro, Escape Join Date: Feb 2010 Location: Michigan Posts: 368	When I got my mrt v1's they didn't clamp one side right. It vibrated and rattled so much it was sickining. __________________

03-09-2014, 07:41 AM	#8
Can't_C_Me Don't Sleep on My V6 Drives: 2016 C7 1LT Join Date: Dec 2010 Location: Oxford, GA Posts: 3,596 View My Garage	You got the regular Magnaflow x pipe. The V6 from what I've heard and been told sound best with the Magnaflow Resonated X pipe. Sent from my Samsung Galaxy Note 3 __________________

03-09-2014, 07:44 AM	#9
cntryman77 Drives: 2010 Camaro LS Join Date: Mar 2010 Location: Newton Falls, OH Posts: 1,092	hard to tell from the pics, did they leave or remove the factory resonators? Sent from my iPhone using Tapatalk __________________ My build thread: http://www.camaro5.com/forums/showthread.php?t=126631

03-08-2014, 11:05 AM	#2
Eddiefuzz Drives: 2011 RS Join Date: Apr 2011 Location: Florence New Jersey Posts: 1,125	You have a GMPP catback or just the mufflers/axelback? I have to ask, why add the Magnaflow x pipe, when the GMPP exhaust catback comes with one? That's the exhaust I have and love, with no drone.

03-08-2014, 02:28 PM	#4
Eddiefuzz Drives: 2011 RS Join Date: Apr 2011 Location: Florence New Jersey Posts: 1,125	I have the Borla version of the GMPP exhaust in a catback. There isn't any drone with it. It sounds like something came loose and is touching. There shouldn't be a rattling, the seat might vibrate little more, nothing to excessive, like a seat messager on low. Did you think this combo up? The Magnaflow Resonated Xpipe "Reduces" Drone, it doesn't cause it. I'll tell ya, you can get the catback pipes for the GMPP to add to your system for $400 on Amazon.com.

03-08-2014, 02:59 PM	#5
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	Sorry for the photo quality. That's what I have. The last photo shows the xpipe I have. All I know, is that the droning is bad. It sounds like a rice burner. Monday I'll be taking it back to the shop, so they can find out what it is.

03-09-2014, 12:02 AM	#7
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	These were welded on. No clamps used.

03-09-2014, 02:36 PM	#11
spyderbuddy Drives: 2010 RS Inferno Orange Metallic Join Date: Mar 2010 Location: Albany, Ga. Posts: 3,398 View My Garage	Yep sounds like you got the DREADED DRONE issue, The V6 exhaust upgrade requires the Magnaflow Resonated X Pipe not just and X Pipe. If I'm not missinformed the L99 is in this catagory also. You got to run a Resonator LS3 with straight pipe and H pipe just sounds bad A$$. __________________ PCP Hideaway Headlight Covers, BBK Headers & High Flow Cats, ZL1 Add-ons Wicker Bill, TL1/ZL1 Hood Insert, Gen5 DIY Frameless Mirror, ABL Dash Lighting an My link Navigation, Blacked out Rear Bowtie, all Sylvania led Turn Signals, Ceramic Window Tint By Nicks, MBRP Exhaust tips, GEN5 DIY Virginia Legal DRL Harness, Painted Brake Calipers, Vittesse Throttle Controller, Heritage Grill, Diode Dynamics Led Lighting, Manual Shifter Boot, Paddle Shifters, CNC Throttle Body, Trifecta Tune, RX Catch Can & Breather, Trunk Black out and Side Grills, Chevorlet door Sills.

03-09-2014, 02:55 PM	#12
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	Thanks for all the responses. Starting to learn more on what is what. A resonator is different from a cat converter ? The 4 small stock cat converters are still there. Since it's pretty annoying driving the car as is. If they don't carry resonated xpipes, should I just go back to the stock pipes that were there before? Thanks again.

03-12-2014, 01:21 AM	#13
Maverick1776 Drives: 2013 Camaro 2LS Join Date: Feb 2013 Location: Fort Lauderdale, FL Posts: 187	Picked up a Magnaflow resonated x-pipe. Installing it tomorrow. I will let you know the outcome. And I will be selling the current x-pipe that I have now.