Changed the hot end? Like just the brass nozzle tip? Or the what?

Either way if pla isn’t printing below 220 I’d start with a pid autotune. This will let you see if the hot end is actually doing what it should.

This site:

https://teachingtechyt.github.io/calibration.html

Has all the steps for tuning a printer, pid and e steps are listed. It’s worked well for me on my old Ender3 Bowden drives and many of my newer direct drive ones.

What printer do you have?