Does running a bit rich increase popping on decel?
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Team Owner
Joined: Mar 2001
Posts: 25,889
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From: Virginia Beach
CI 3-5-6-7-8 Veteran
Does running a bit rich increase popping on decel?
I have a vortex and Kooks w/ cats and stingers. My car gurgles and pops a whole bunch on deceleration. It's never been re-tuned and runs a bit rich at WOt... about 11.5/1. Would getting it leaned out a bit decrease the popping?
Thread Starter
Team Owner
Joined: Mar 2001
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From: Virginia Beach
CI 3-5-6-7-8 Veteran
Originally Posted by Roofless
An X-pipe wil help you out a great deal.
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Team Owner
Joined: Mar 2001
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From: Virginia Beach
CI 3-5-6-7-8 Veteran
Originally Posted by DsC5
Details? 
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Burning Brakes
Joined: Aug 2003
Posts: 1,229
Likes: 1
From: Palm Bay FL
Originally Posted by BigBlue
I enjoy the sound. Sounds mean and let's people know I mean business.
Burning Brakes
Joined: Jun 2002
Posts: 1,037
Likes: 31
From: Richmond Texas
My other car is a dodge diesel with 4" straight pipe. The vette is mild compared to that thing. It's all a matter of personal preference though. Some like it, some don't. I guess that's what makes this country so great.
Melting Slicks
Joined: Feb 2001
Posts: 2,804
Likes: 358
From: Northville, MI
Your problems on the surging and crackling are tuning issues. You need to get a scan tune to eliminate those poblems. It will not only sound better but it will also run better. A scan tune consists of a 20-30 minute road test with logging software and using that data to retune the PCM to eliminate the rich/lean conditions. There are 22 parameters the computer uses in the engine management process. They cover from start up to warm engine to highway cruising to rush hour driving to WOT to decel.
Le Mans Master
Joined: Apr 2002
Posts: 7,281
Likes: 5
From: Boston
Backfire like that is not cause by rich conditions, its cause be LEAN conditions. Moreover, you being rich at WOT doesnt have anything to do with decel! You arent WOT on decel so why even mention it. Its the decel table that is a bit lean.
Thread Starter
Team Owner
Joined: Mar 2001
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From: Virginia Beach
CI 3-5-6-7-8 Veteran
I wouldn't call it backfire... it's just lots of popping ang gurgling on decel, more so than befor I added the Kooks w/ x-pipe. The only thing that's changed is the car runs a bit richer up top.
Drifting
Joined: Oct 2002
Posts: 1,710
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From: Langhorne PA
Cobra,
My popping on deceleration was greatly reduced during the dyno tune by having the spark slightly advanced at decel. Cleared about 80% of the popping. Sometimes I kinda miss it. I do think that it sounds mean, but does get annoying after a while.
My popping on deceleration was greatly reduced during the dyno tune by having the spark slightly advanced at decel. Cleared about 80% of the popping. Sometimes I kinda miss it. I do think that it sounds mean, but does get annoying after a while.
