Just Ordered JBA Cats! - Thanks Camaro5 - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

cornerspeed92 · 04-10-2017, 05:36 PM

Quote:

Originally Posted by not a dodge

hey gang, looking for a deeper meaner sound on my 2010 2SS, what would you recommend, just changing the cat or replacing a cat back kit.

I just went with KOOK's and High flows....and

WOW!! what a difference from my old just JBA High flow's.

Andoskyy · 04-18-2017, 02:07 PM

Have a pretty nasty sounding noise after the install up near the cats. Might have to drop them and make sure the gaskets sealed OK. Really don't want to do that all over again!

Its a low RPM noise/rattle when you let off the throttle. Haven't had anyone around to rev it up while I listen from underneath yet though.

Hopefully something simple!

Shutudwn · 04-19-2017, 05:00 PM

Having just installed the Solo cats on jack stands I know that tightening and lining up everything isn't easy. Although I don't believe that I have leaks at the manifolds the check engine light did come on. Codes P2099 and P2097. o2 extensions could be loose....

Andoskyy · 04-21-2017, 08:52 AM

Everything is sealed up fine, but still a nasty rattle and getting worse. It's at the point where it's embarrassing to drive.

Pretty sure it's the baffles inside the muffler itself. Had a friend rev it up while i looked around underneath and definitely coming from that area, but pretty hard to isolate with all the echoing under the car.

It's definitely not the NPP flaps. I stuck a dowel against them and the rattle was still there.

Lots of Corvette owners have this problem and some have taken apart their mufflers to find all sorts of cracks on the inside.

I'm going to take the exhaust down so I can more closely inspect the heat shields in the tunnel. Might end up cutting an inspection hole in the mufflers to look for cracks. Will keep everyone posted.

SSEssence · 04-21-2017, 10:18 AM

Time for a muffler delete

Andoskyy · 04-21-2017, 12:03 PM

Cut an inspection hole in the muffler, and nothing. All looks fine inside.

It's really annoying. I've even seen some youtube videos of corsa exhausts making the same noise. Its just when you let off the gas at low RMP's

I hope it's not just the nature of the high flow cats.

Andoskyy · 04-21-2017, 12:18 PM

This is my exact sound. Please tell me this isn't normal...

Andoskyy · 05-11-2017, 12:20 PM

Took my car to a local speed shop to have them check out the noise. Said it was normal for the LS engines.

I'll be putting the stock cats back on. Pretty disappointed.

Abdi · 05-11-2017, 03:13 PM

Quote:

Originally Posted by Andoskyy

Took my car to a local speed shop to have them check out the noise. Said it was normal for the LS engines.

I'll be putting the stock cats back on. Pretty disappointed.

That sucks! I've never heard of anyone having this issue before.

Andoskyy · 05-11-2017, 03:30 PM

Here's a video...hopefully it works.

https://youtu.be/oySsQGQxBu0

https://youtu.be/oySsQGQxBu0

04-21-2017, 10:18 AM	#19
SSEssence Instagram: Sangstah Drives: 2019 Camaro 1LE Join Date: Sep 2016 Location: Buena Park, CA. Posts: 2,803 View My Garage	Time for a muffler delete __________________ 2019 SS 1LE - "CaSSandra" 2014 SS - "AleSSandra - Sold" 94 Z28 - Sold Follow the build https://www.camaro6.com/forums/showthread.php?t=612717

04-18-2017, 02:07 PM	#16
Andoskyy Drives: 2015 Summit White 2SS/RS 1LE Join Date: Nov 2014 Location: Massachusetts Posts: 230	Have a pretty nasty sounding noise after the install up near the cats. Might have to drop them and make sure the gaskets sealed OK. Really don't want to do that all over again! Its a low RPM noise/rattle when you let off the throttle. Haven't had anyone around to rev it up while I listen from underneath yet though. Hopefully something simple!

04-19-2017, 05:00 PM	#17
Shutudwn Drives: 2004 Ford Mustang Cobra Join Date: Aug 2015 Location: Quebec, CA Posts: 107	Having just installed the Solo cats on jack stands I know that tightening and lining up everything isn't easy. Although I don't believe that I have leaks at the manifolds the check engine light did come on. Codes P2099 and P2097. o2 extensions could be loose....

04-21-2017, 08:52 AM	#18
Andoskyy Drives: 2015 Summit White 2SS/RS 1LE Join Date: Nov 2014 Location: Massachusetts Posts: 230	Everything is sealed up fine, but still a nasty rattle and getting worse. It's at the point where it's embarrassing to drive. Pretty sure it's the baffles inside the muffler itself. Had a friend rev it up while i looked around underneath and definitely coming from that area, but pretty hard to isolate with all the echoing under the car. It's definitely not the NPP flaps. I stuck a dowel against them and the rattle was still there. Lots of Corvette owners have this problem and some have taken apart their mufflers to find all sorts of cracks on the inside. I'm going to take the exhaust down so I can more closely inspect the heat shields in the tunnel. Might end up cutting an inspection hole in the mufflers to look for cracks. Will keep everyone posted.

04-21-2017, 12:03 PM	#20
Andoskyy Drives: 2015 Summit White 2SS/RS 1LE Join Date: Nov 2014 Location: Massachusetts Posts: 230	Cut an inspection hole in the muffler, and nothing. All looks fine inside. It's really annoying. I've even seen some youtube videos of corsa exhausts making the same noise. Its just when you let off the gas at low RMP's I hope it's not just the nature of the high flow cats.

05-11-2017, 12:20 PM	#22
Andoskyy Drives: 2015 Summit White 2SS/RS 1LE Join Date: Nov 2014 Location: Massachusetts Posts: 230	Took my car to a local speed shop to have them check out the noise. Said it was normal for the LS engines. I'll be putting the stock cats back on. Pretty disappointed.

05-11-2017, 03:30 PM	#24
Andoskyy Drives: 2015 Summit White 2SS/RS 1LE Join Date: Nov 2014 Location: Massachusetts Posts: 230	Here's a video...hopefully it works. https://youtu.be/oySsQGQxBu0 https://youtu.be/oySsQGQxBu0