Back Firing
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Junior Member
Joined: Jun 2011
Posts: 19
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From: michigan
Car: 1989 iroc-z
Engine: supercharged 305
Transmission: automatic
Axle/Gears: 3.73
Back Firing
I installed larger fuel injectors on my camaro. It now backfires when i let off the gas and it runs sluggish. I was told i need to burn a new chip. And someone else told me i need a new distributor and wires. Any suggestions would be appreciated.
Junior Member
Joined: Sep 2011
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Re: Back Firing
Try southbay08 on this site. His specialty is injectors
Junior Member
Joined: Sep 2011
Posts: 7
Likes: 0
Re: Back Firing
what psi did you have? What did you go to?
Supreme Member
iTrader: (3)
Joined: Nov 2001
Posts: 2,428
Likes: 2
From: Fairview Heights Illinois
Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: Back Firing
The injector constant in your chip needs to match your injector flow rate.
Junior Member
Joined: Jan 2012
Posts: 84
Likes: 0
From: Central Square, NY
Car: 1984 Camaro sport coupe
Engine: 5.0(H/O) 305 carb'd
Transmission: TCI St. Fitr stge 2 700r4 man.valve
Axle/Gears: stock gears, Limited Slip
Re: Back Firing
just throwin my 
in....check ur whole entire exhaust system headers to collectors to muff for any leaks. u would be surprised that any slight leak up by the headers will cause backfiring like a shot gun sound or rapid crackling.
in....check ur whole entire exhaust system headers to collectors to muff for any leaks. u would be surprised that any slight leak up by the headers will cause backfiring like a shot gun sound or rapid crackling. 
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