Take into account the injectors are not connected to the same pump as before on same voltage now.
Your new pump is hard-wired to battery now meaning the first 2 load cells @ idle will need even less duty cycle again as the squirter is under more rail pressure now.
Latency settings need to be correct before starting the car.
Your plugs will now be wet.
I Wouldn't be touching a single adjustment on a ecu without wideband connected.
It's like crossing the motorway blindfolded.