Adjusting Fuel Curve

[peter paul fenske]

On most SD sys you have a base pulse table somewhere
In trucks this is based on EGR flow and allows
for EGR flow displacement.

Some of the TPI apps have an injector constant that
reflects injector flow. The Sy also has this..

:peter

At 11:52 AM 8/18/98 -0400, you wrote:
>Couldn't find the answer to this in the archives, so I will
>address the list.
>
>How can you on a Speed Density system move the entire fuel
>curve up or down?  I have a Blazer with a 4.3 Liter V6, TBI
>system.  Can the fuel curve be adjusted up or down by making
>changes to the MAP or TPS or other sensors?  Or is this
>something that can only be done by modifying the data stored
>in the ECU chip?
>
>Thanks,
>John Wickerham
>
>
>