Deceleration noise
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,651
Likes: 0
From: Ocean County NJ
Deceleration noise
Guys,
I have had my Corsa Pace exhaust for a few years now, paired with TPIS headers and Random Tech super flow cats and X-pipe. The X-pipe got rid of the crackling and popping. For some reason, recently the exhaust started to have excessive crackling almost like backfire when I left off gas, however, the car runs great. What could have changed or causing this?
Any insight would be appreciated.
Thanks
Marc
I have had my Corsa Pace exhaust for a few years now, paired with TPIS headers and Random Tech super flow cats and X-pipe. The X-pipe got rid of the crackling and popping. For some reason, recently the exhaust started to have excessive crackling almost like backfire when I left off gas, however, the car runs great. What could have changed or causing this?
Any insight would be appreciated.
Thanks
Marc
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Guys,
I have had my Corsa Pace exhaust for a few years now, paired with TPIS headers and Random Tech super flow cats and X-pipe. The X-pipe got rid of the crackling and popping. For some reason, recently the exhaust started to have excessive crackling almost like backfire when I left off gas, however, the car runs great. What could have changed or causing this?
Any insight would be appreciated.
Thanks
Marc
I have had my Corsa Pace exhaust for a few years now, paired with TPIS headers and Random Tech super flow cats and X-pipe. The X-pipe got rid of the crackling and popping. For some reason, recently the exhaust started to have excessive crackling almost like backfire when I left off gas, however, the car runs great. What could have changed or causing this?
Any insight would be appreciated.
Thanks
Marc
That is the best part of the combo. I also have TPIS Lts, Random tech high flow cats and x -pipe
What that pop-n-gurgle is unburnt fuel going though as you let off the gas. It ignites in the header x-pipe region. No way to get rid of it, but slow down sooner . Personally I think that is true mucle car sound
:ppl forget that LTs and higher flow exhuast will cause the noise to be louder and the resonece to get very loud
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
It has nothing to do with a batch of fuel.
If you let off the throttle quickly, they will be some unburnt fuel that goes out the exhaust ports.
This unburnt fuel is what ignites in the Headers, x-pipe area causing he pop-n-gurgle sound
If you let off the throttle quickly, they will be some unburnt fuel that goes out the exhaust ports.
This unburnt fuel is what ignites in the Headers, x-pipe area causing he pop-n-gurgle sound
Racer
Joined: Feb 2006
Posts: 409
Likes: 0
From: Albany NY
Marc
That is the best part of the combo. I also have TPIS Lts, Random tech high flow cats and x -pipe
What that pop-n-gurgle is unburnt fuel going though as you let off the gas. It ignites in the header x-pipe region. No way to get rid of it, but slow down sooner . Personally I think that is true mucle car sound:
ppl forget that LTs and higher flow exhuast will cause the noise to be louder and the resonece to get very loud
That is the best part of the combo. I also have TPIS Lts, Random tech high flow cats and x -pipe
What that pop-n-gurgle is unburnt fuel going though as you let off the gas. It ignites in the header x-pipe region. No way to get rid of it, but slow down sooner . Personally I think that is true mucle car sound
:ppl forget that LTs and higher flow exhuast will cause the noise to be louder and the resonece to get very loud
Racer
Joined: Feb 2007
Posts: 333
Likes: 1
From: ronkonkoma new york
i have a supercharged z06 with kooks long tubes and borla cat back and mine does this when i let off the gas sometimes. Might this be the same thing? I thought maybe the car was set up to run rich, for saftey reasons? Sorry 4 the hyjack.
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Intermediate
Joined: Apr 2007
Posts: 39
Likes: 0
From: Noblesville Indiana
I've always heard that popping can be caused by the car running too lean on decel, or exhaust leaks.
Since it just started doing it all of a sudden I would look for leaks, particularly around the primaries. If you can't hear any obvious leaks, I would visually inspect the entire exhaust for black soot where there's any kind of connection.
Since it just started doing it all of a sudden I would look for leaks, particularly around the primaries. If you can't hear any obvious leaks, I would visually inspect the entire exhaust for black soot where there's any kind of connection.
Burning Brakes
Joined: Mar 2005
Posts: 1,187
Likes: 2
From: Houston Texas
St. Jude Donor '08
It could also be attributed to a stuck or leaking air check valve on the exhaust. If these are stuck open or closed, it can mess with fuel mixture, codes from your O2 sensors like low voltage codes etc. Just my $.02 worth.
Burning Brakes
Joined: Aug 2006
Posts: 1,217
Likes: 5
From: Stark County Ohio
I've always heard that popping can be caused by the car running too lean on decel, or exhaust leaks.
Since it just started doing it all of a sudden I would look for leaks, particularly around the primaries. If you can't hear any obvious leaks, I would visually inspect the entire exhaust for black soot where there's any kind of connection.
Since it just started doing it all of a sudden I would look for leaks, particularly around the primaries. If you can't hear any obvious leaks, I would visually inspect the entire exhaust for black soot where there's any kind of connection.
