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

Got my first data log... well kind of.

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Old Oct 7, 2006 | 10:39 PM
  #1  
Blazin4x4's Avatar
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Car: 1988 Chevy silverado K5
Engine: 350 bored .030, crane cams hyd bluprint l-79 cam 447 lift 272 dur, camel hump heads port and polished 1.94 1.50, afterburner headers and y pipe, holley 670 cfm tbi, holley projection dual plane manifold, accel high pressure fuel pump, 3 inch exhaust
Transmission: 700 r4 with corvette servo and shift kit.
Got my first data log... well kind of.

Before it caught on fire I got these numbers. It runs sooo rich and won't idle. I didn't get it fired up but this is what I got while it was cranking...



Sorry for the bad screen shot... Is there any way to show the aldl stuff without pasting the screen shot to paint?

to fill in the blanks IAC was 100, INT was 128, MAP was 98.9 kpa

Any suggestions for getting the thing to idle or start? Ever since I put a muffler on it won't fire up like it did with open headers. I've already changed the bpw using a calculator and I pulled all the timing advance out to so I can get a baseline idle.

I'm think IAC but I don't know what to do. I need to lean it out at low rpm. Can I do this with the IAC?
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Old Oct 8, 2006 | 12:50 PM
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jase's Avatar
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From: west Point MS USA
do you have an oxygen sensor hooked up at all?
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Old Oct 8, 2006 | 05:05 PM
  #3  
Blazin4x4's Avatar
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Joined: Feb 2005
Posts: 197
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Car: 1988 Chevy silverado K5
Engine: 350 bored .030, crane cams hyd bluprint l-79 cam 447 lift 272 dur, camel hump heads port and polished 1.94 1.50, afterburner headers and y pipe, holley 670 cfm tbi, holley projection dual plane manifold, accel high pressure fuel pump, 3 inch exhaust
Transmission: 700 r4 with corvette servo and shift kit.
Originally Posted by jase
do you have an oxygen sensor hooked up at all?
yes but it didn't fire up... just cranked and sputtered and popped a little... if I remember correctly it was .394 volts at the highest.
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Old Oct 10, 2006 | 05:53 PM
  #4  
BMmonteSS's Avatar
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From: Buckhannon, WV
Car: 84' Monte
Engine: 350
Transmission: 700-r4
Axle/Gears: ferd 9" posi 3.50 gears
Edit: I just noticed you said you got those readings while cranking the motor, that won't tell you a thing. You really need to get your injectors fixed before you go any further.
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