Bogged down While In Gear And Sputtered During Acceleration

If you are getting poor fuel volume from your tank from either clogged system or failing pump your carburetor bowl will typically be full at idle and when you go to moderately accelerate it will pull smooth for 5 - 10 seconds then the fuel supply issue will show up as the bowl full of fuel in the carb is gone and not being replenished quickly enough. Then once your running on diminished fuel volume, the car will bog, jump and jerk and possibly backfire up the carb.

Otherwise:

Be sure your ecu is grounded cleanly. Be sure your chassis, battery, engine grounds are great.

Check voltage at your ecu while under load by sticking a pin thru the + wire and running a extension to your voltage tester while you drive and a passenger monitors it.

Then check voltage at your coil while driving up a hill too.

I dont know what the voltages should be but I am estimating no less than 12 at the ECU and > 7 at the coil. Unless you have the original style ecu which has a 12 and a 5 volt supply.

If both voltages are good then replace the ecu and then the coil (hopefully with a spare you have lying around)

If it is missfiring and sputtering, it engine related. If it is simply loaded and bogged down but running smooth then I might suspect the drivetrain.

Is the e-brake on? J/K