Good Morning Forumers,and Happy Turkey Day.

I'm new to the forum and have a couple of questions. How can i change the shift points on my truck? How do i retrieve the pcm parameters and save them for tweeking. As you can see I'm new to EFILIVE.
I have a 4.5 lly with a 1056 TC, 6spd. shift kit line press. boost valve. and a custom made one pieace flywheel/flexplate. FPRV valve shimmed with two washers. Thank you and sorry for the igno.