Show me your A0014's

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Originally Posted by SSpdDmon

Just curious, what does your blend look like?

Mine is about 60% below stock:

LABELS Charge Temperature Blending (Factor)
Grams/Second {link: SAE.MAF} Value
0.00 0.320000
10.00 0.167500
20.00 0.112500
30.00 0.097500
40.00 0.087500
50.00 0.081250
60.00 0.075000
70.00 0.070000
80.00 0.066250
90.00 0.061250
100.00 0.057500
110.00 0.053750
120.00 0.050000
130.00 0.046250
140.00 0.042500
150.00 0.035000

This seems to work fairly well with the IAT relocated to capture true initial IAT temps prior to progressing through the intake tract and into the cylinders.

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How does this table work if you run SD? The table values are ran off SAE.MAF

Thank you.

GM.DYNAIR reports grams/second.

Quote:

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Originally Posted by 2002_z28_six_speed

How does this table work if you run SD? The table values are ran off SAE.MAF

Thank you.

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Updated...

Quote:

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Originally Posted by SSpdDmon

Just curious, what does your blend look like?

Mine is about 50~80% below stock:

LABELS Charge Temperature Blending (Factor)
Grams/Second {link: SAE.MAF} Value
0.00 0.145000
10.00 0.126000
20.00 0.112000
30.00 0.102000
40.00 0.095000
50.00 0.090000
60.00 0.086000
70.00 0.082000
80.00 0.078000
90.00 0.074000
100.00 0.070000
110.00 0.066000
120.00 0.062000
130.00 0.058000
140.00 0.054000
150.00 0.050000

This seems to work fairly well with the IAT relocated to capture true initial IAT temps prior to progressing through the intake tract and into the cylinders.

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How does A0014 (IAT VE) interact with A0008 (ECT Commanded fuel) do they multiply on top of one another?

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Originally Posted by zapp168

How does A0014 (IAT VE) interact with A0008 (ECT Commanded fuel) do they multiply on top of one another?

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Quote:

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Originally Posted by EFI Live

The air mass per cylinder can be determined from the VE table using the following formula:
g/cyl = VE*MAP/charge temperature
Ve is in g*K/kPa,
MAP is in kPa,
charge temperature is in degrees Kelvin.

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That's how the air mass is calculated. Then based on the commanded fuel, current RPM, and other constants in the tune, an IPW is determined based on what the PCM knows to be true about the injectors.

A0008, IIRC, simply multiplies the VE by the appropriate value to inflate or deflate the air mass calculation.

A0014 mulitplies the VE table(s) B0101/A0007.

A0008 multiplies the Commanded Fuel table B3647.

Links to other discussion on A0014:
showthread.php?t=5563
showthread.php?t=7132

Anyone ever figure out why this table runs opposite to what one would think... i.e. needs richening up when hotter IAT and leaned out when cold IAT? Exactly opposite of what my logic says - need more fuel when IAT is colder...

Hi BLK, it seems nobody has figured it out, yet.

Hey! Thanks Joe! I've never had time with a car to log it under many IATs and figure out what these guys have - I've been using it backwards...