Check the basics, fuel delivery, air metering, spark. With all the
work you've had done you've introduced quite a few variables, but seems
to me all would be related to basic stuff, IMO, like fuel/air filters,
plug wires, wearable ignition parts. Now is the time to fix this
problem whatever it is before it starts taking out any sensors or other
You can drive to an autozone and get your car's computer scanned for
free. If there are any codes post them here and someone will be sur
eto look into their crystal ball for you.