I switch my Turbo from the T25 Garrett to a 16g tdo5 since I have been having to get my car passed 3500 RPM before boost actually hits is this a problem or is this normal before boost or hit a lot sooner am I doing something wrong do I need something else

I switched my Turbo from the T25 Garrett to a 16g TDO5. I have been having to get my car beyond 3500 RPM before boost actually begins.

Is this a problem or is this normal before boost?

Should it kick in a lot sooner or am I doing something wrong?

Is there something that I am doing incorrectly or do I need different sensors and other components to go along with the turbo swap?