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

I really really need to pass emissions this week.

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Old Mar 16, 2003 | 02:25 AM
  #1  
Chuck!'s Avatar
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From: Dayton, O.
Car: 91 Camaro Z28
Engine: LS7
Transmission: M12/T56
Axle/Gears: 3.79
I really really need to pass emissions this week.

Ok here's the problem, I did the heads/cam/intake and my car runs pig rich. I wish I coulda taken a picture of the plugs I pulled today, they were black. This is at 15 psi on stock injectors, too. They're BAD. Im on spring break this week and I need to pass E-Check so I can get my registration updated and drive the car. Right now it wont pass, Im rich as ****. Im still running a cat and smog stuff aside from EGR. Are there any tricks I can do? I put new plugs and wires on today, I'll probably change the O2 sensor, too. Granted I need a new chip bad, but I dont know if the equipment would get here in time even if I order it tomorrow. Any help with this one guys? I really need something.

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Old Mar 16, 2003 | 09:39 PM
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From: Glen Allen, VA
If your at 15 psi and running rich just lower the pressure!
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Old Mar 17, 2003 | 12:38 AM
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Chuck!'s Avatar
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From: Dayton, O.
Car: 91 Camaro Z28
Engine: LS7
Transmission: M12/T56
Axle/Gears: 3.79
Its down to 12.5 and Im still pulling ~115 blm's. I dont know how anyone runs a cam/heads with stock chip.
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Old Mar 17, 2003 | 12:40 AM
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From: Glen Allen, VA
the factory settings are between 7 and 13 i think, you can still go way down. just go down as much as it takes for you to lean out.
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Old Mar 17, 2003 | 01:27 AM
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From: Dayton, O.
Car: 91 Camaro Z28
Engine: LS7
Transmission: M12/T56
Axle/Gears: 3.79
I marked off my factory setting and it was ~14.5-15 psi. The car wouldnt run/idle at 11 psi. Enough to drive me nuts! Oh well if you want fuel injection I guess you gotta pay the price.
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Old Mar 17, 2003 | 02:03 AM
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From: Glen Allen, VA
Hmmm thats weird, Ive never even heard of a factory setting anywhere near that high. good luck though, i hope you can figure it out before you go to get it smogged.
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