TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Backfiring under deceleration

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Old May 6, 2003 | 07:26 PM
  #1  
matt_82transam's Avatar
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Joined: Oct 2002
Posts: 220
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From: Winnipeg, Manitoba, Canada
Car: 82 T/A
Engine: 350
Transmission: th350 w/ high stall C.
Backfiring under deceleration

When I accelerate rapidly or any other way everything is fine. However when I quickly let go of the gas there is a lot of loud backfiring.
Also there is always a lot of soot coming out of my tailpipe, in other words it runs way too rich, could it be my old o2 sensor?
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Old May 6, 2003 | 09:10 PM
  #2  
StealthElephant's Avatar
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Joined: Jan 2003
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From: Woodbury, NJ
Car: 87' Iroc
Engine: 350
Transmission: 700R4
it's popping? i thought popping was normal sometimes under deceleration....
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