Corsa Pace and mild backfiring issues!
Thread Starter
Instructor
Joined: Sep 2006
Posts: 205
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Corsa Pace and mild backfiring issues!
Gents, I have a 99 6 speed with Kooks LT, x-pipe, hi-flo cats, and Corsa Pace set up. It's computer tuned and healthy, EXCEPT it likes to fart occasionally when i am off the gas or down shifting at mid-range rpm.
Am I the lone ranger here or does anyone else experience these gas pains like my darlin does!
Am I the lone ranger here or does anyone else experience these gas pains like my darlin does!
Melting Slicks
Joined: May 2005
Posts: 3,461
Likes: 161
From: Las Vegas Nevada
St. Jude Donor '08
It is a common “feature” of Corsa cat backs. Most people refer to it as gurgling and many, including me like it. On the other side of the coin, Corsa cat backs DO NOT HAVE ANY RESONANCE! Almost every other system has resonance and it can drive you crazy. Learn to like it, but don’t change to another system unless it is the stock ZO6 titanium one.
Thanks,
Clayton from Las Vegas
Thanks,
Clayton from Las Vegas
Safety Car
Joined: Jan 2004
Posts: 3,786
Likes: 1
From: Houston TX
Originally Posted by Slowhawk
Sometimes that backfiring is caused by the timing going to 0 degree's on decel. I ussually set minimum timing at 10-12 degree's which cures it.
Once I had my cam installed and the engine tuned my popping was greatly reduced.
Pro
Joined: Sep 2005
Posts: 538
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From: Geneva, IL Bring back the Chief!
St. Jude Donor '06-'07-'08-'09-'10,'13-'14,'19-'20-'21-'22
I've got LG longtubes, and they got rid of the gurgling. The popping persisted. I tried a Predator performance tune, and that significantly reduced the popping. Not sure why. Maybe the Predator changed the timing like in the earlier post.
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Tech Contributor
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I'm NOT a tuner by any way shape or form BUT,,,,when I had my car tuned, the tuner changed the DE-acceleration fuel cut off value and that took care of 90% of my gurgling noises. (not that it bothered me!
) I bet you that if you modified the DE acceleration Fuel Cut Off value and the modified the timing like Slowhawk (the MASTER OF ALL TUNING GURUS) recommends, it will be gone!!
BC
) I bet you that if you modified the DE acceleration Fuel Cut Off value and the modified the timing like Slowhawk (the MASTER OF ALL TUNING GURUS) recommends, it will be gone!! BC
Racer
Joined: Aug 2005
Posts: 494
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From: New Bedford MA
Personally, thats the sound I want to hear!! I don't like to think about my old stock exhaust compared to long tubes and some bullets
Thats how I envisioned a Corvette to sound like. I swear I cream myself everytime I start that car up!....
Thats how I envisioned a Corvette to sound like. I swear I cream myself everytime I start that car up!....
Thread Starter
Instructor
Joined: Sep 2006
Posts: 205
Likes: 0
Originally Posted by Scooterscott
Gents, I have a 99 6 speed with Kooks LT, x-pipe, hi-flo cats, and Corsa Pace set up. It's computer tuned and healthy, EXCEPT it likes to fart occasionally when i am off the gas or down shifting at mid-range rpm.
Am I the lone ranger here or does anyone else experience these gas pains like my darlin does!
Am I the lone ranger here or does anyone else experience these gas pains like my darlin does!
Thanks fo the gas pain relief ideas! I love the gurgling, no doubt, but the "backfire" every once in a while irks me. The tuning variations makes a lot of sense to me. When i add the cam as well i'll hope for the best!
Thanks all of you vette dudes!
