Best way to increase accel enrighment?

[GMC Truck]

Got a major stumble right at take off in my truck with 4 speed. Is it best to increase the accel enrichment vs. TPS or MAP? About how much would I need? If this was a carb I would need to increase the "pumpshot" is the best way to describe the stumble and its right where you don't want it... like pulling out into traffic!!

 

[dave w]

I think Accel. Enrichment vs. Differential MAP and Accel. Enrichment vs. Differential TPS are the most similar tables to a carburetor accelerator pump shot.

I think adding 10% ~ 15% more to each value in both tables will show a seat of the pants difference.

Old value x 1.10 = 10% more New Value

Old value x 1.15 = 15% more New Value

dave w

 

[GMC Truck]

dave w, Should I have to change both of these or will just one do it? Don't the accel-vs-map change the enrichment like if you start pulling a long grade with no throttle change? The accel-vs-TPS has more parameters to adjust and makes more since cause I have a "tip in" stumble like pulling away from a dead stop. If your moving at any speed and just mash the throttle it don't stumble.

 

[dave w]

dave w, Should I have to change both of these or will just one do it? Don't the accel-vs-map change the enrichment like if you start pulling a long grade with no throttle change? The accel-vs-TPS has more parameters to adjust and makes more since cause I have a "tip in" stumble like pulling away from a dead stop. If your moving at any speed and just mash the throttle it don't stumble.

I would adjust accel-vs-TPS first by 10% and see if the "tip in" stumble gets better or is not a problem?

dave w