Do all performance cat backs pop on decel?
Thread Starter
Instructor
Joined: Feb 2005
Posts: 111
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Do all performance cat backs pop on decel?
I had Flowmasters on my LT1 and it popped badly on decel, had to remove them. Now looking at replacing the stock cat back on my LS1 and in reading the posts, I see that many talk of popping on decel. To me this is really annoying. Should I stick with the stock system or are there systems which sound better than stock and don't pop?
Burning Brakes
Joined: Jan 2003
Posts: 1,207
Likes: 27
From: Sun Diego CA
Only mods are Blackwing and Borla Stingers, they pop like nuts on decel. They even pop when shifting.
Heard an xpipe may somewhat help.
Bothers some, not others.
I can live with it, sounds kinda cool IMHO.
Heard an xpipe may somewhat help.
Bothers some, not others.
I can live with it, sounds kinda cool IMHO.
Racer
Joined: Jun 2003
Posts: 256
Likes: 0
From: Newport Beach Ca
Originally Posted by timf1954
I had Flowmasters on my LT1 and it popped badly on decel, had to remove them. Now looking at replacing the stock cat back on my LS1 and in reading the posts, I see that many talk of popping on decel. To me this is really annoying. Should I stick with the stock system or are there systems which sound better than stock and don't pop?
I have a GHL system and it also "pops" on decel. As I understand, you can reprogram the decel fuel trims to eliminate the popping --- just need to be able to do that or find a tuner who can.
Pro
Joined: Apr 2002
Posts: 726
Likes: 2
From: Denver CO
Hardly Pops
Mine barely pops, see sig for mods. I suspect exhaust system leaks might contribute to the problem, providing air to combust the rich mixture. I kinda like it when it does the occasional pop. My LS Edit, done by others, may have helped in my case???????
Instructor
Joined: Aug 2004
Posts: 105
Likes: 0
From: Dallas TX
I've got the Z06 Ti's and they pop somewhat on deceleration. As stated above I've heard and X-pipe will remedy the problem. Hopefully, my Dynatech header system will alleviate the problem when they get here!!
Racer
Joined: Jun 2004
Posts: 421
Likes: 0
From: Dallas Texas
Originally Posted by nsmith80
I've got the Z06 Ti's and they pop somewhat on deceleration.
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Safety Car
Joined: Feb 2003
Posts: 3,865
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From: Chicago il
The popping is always there, ON the stock and Zo6 exhsauts the sounds are muffled very well and in audible, but they are there. When you go to an aftermarket exhaust with only resonators, then they become more noticible. The popping sound is part of the scavengin effect of the exhaust system. X-pipes will mellow the sound out a bit, but not totaly
Instructor
Joined: Nov 2002
Posts: 204
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From: Crowley TX
Originally Posted by DidntSettle98
Are you guys running the maunal transmission or does the popping happen with the A4 on deceleration too?