Should Corsa Indy's Backfire?
Burning Brakes
Joined: Aug 2000
Posts: 873
Likes: 0
From: Albuquerque nm
Re: Should Corsa Indy's Backfire? (jtk30093)
Have you checked all of the welds on the exhaust system? I have the Corsa Indys and mine used to "backfire" until I had the muffler shop fix the broken weld at the point where they bolt to the factory exhaust. The "backfire" noise has all but gone away! I believe that you probably have a exhaust leak somewhere in your system. Hope that helps :) .
Drifting
Joined: Feb 1999
Posts: 1,481
Likes: 1
From: San Diego CA
Re: Should Corsa Indy's Backfire? (Vettepartz)
From everything that has been described, and you mods, I would say it's normal.
The Corsa system uses passive reflective technology to muffle the exhaust (180 degree out of phase from the source). When the smooth flow of gas through the system is disrupted when you're off the throttle, the system does not work as well and you end up with more noise. In addition, due to the nature of the technology, it's not nearly as efficient in containing transient sounds.
My Indy system pops and bangs like crazy, especially on the track...
and I love it!
Mike :flag
The Corsa system uses passive reflective technology to muffle the exhaust (180 degree out of phase from the source). When the smooth flow of gas through the system is disrupted when you're off the throttle, the system does not work as well and you end up with more noise. In addition, due to the nature of the technology, it's not nearly as efficient in containing transient sounds.
My Indy system pops and bangs like crazy, especially on the track...
and I love it!
Mike :flag
Burning Brakes
Joined: Aug 2000
Posts: 873
Likes: 0
From: Albuquerque nm
Re: Should Corsa Indy's Backfire? (Mike Schriber)
Since advancing richness on WOT this weekend (LS1 Edit) there hasn't been any real loud pops. But still alot of noise... :lol: . :yesnod: . :cool:
Tripp
Tripp
Race Director
Joined: Mar 2000
Posts: 17,602
Likes: 20
From: Palm City Florida
Re: Should Corsa Indy's Backfire? (Vettepartz)
By the looks of the responses I think they are way off..
The sound comes from the very end of the exhaust pipe...not at the headers or the engine compartment...
Why would an air-leak cause an explosion..
This is simple physics..Too much unburnt gas in the exhaust system = Bang!
The sound comes from the very end of the exhaust pipe...not at the headers or the engine compartment...
Why would an air-leak cause an explosion..
This is simple physics..Too much unburnt gas in the exhaust system = Bang!
Melting Slicks
Joined: Jul 2000
Posts: 2,483
Likes: 1
From: Wilmington DE
Re: Should Corsa Indy's Backfire? (chuckster)
By the looks of the responses I think they are way off..
This is simple physics..Too much unburnt gas in the exhaust system = Bang!
This is simple physics..Too much unburnt gas in the exhaust system = Bang!
chuckster is absolutely correct. :smash:
Racer
Joined: May 2001
Posts: 265
Likes: 0
Re: Should Corsa Indy's Backfire? (Vettepartz)
Mine started the backfire thing today :mad I have Indys as well. Mine is a little different though. I get the usual poping in deceleration and occasionally a quick BANG. It is a backfire and not the normal poping.
Even more troublesome is the fact that I can be at a stoplight now and expect it to backfire at least once. Scares the BeJeezus out of everyone nearby. I had it on a lift today at a dealership in Oklahoma City and found an exhaust leak on both sides where the pipes fit into the mufflers. (Black SOOT) on both sides.
Could this cause the backfire? Any ideas are appreciated. I will have a shop weld these puppys soon and post whether or not it helps.
Dave
Even more troublesome is the fact that I can be at a stoplight now and expect it to backfire at least once. Scares the BeJeezus out of everyone nearby. I had it on a lift today at a dealership in Oklahoma City and found an exhaust leak on both sides where the pipes fit into the mufflers. (Black SOOT) on both sides.
Could this cause the backfire? Any ideas are appreciated. I will have a shop weld these puppys soon and post whether or not it helps.
Dave
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