2020 Sierra L84 to L87 engine

hello

I have 2020 sierra L84 5.3L to L87 6.2L complete engine swap it had already ecm unlock

can I swap files with the same OS to the L87 file or should done manually?

Any advice guys?

Seems like a reasonable swap. First check is if they use the same injector. If not you will need to find a like stock tune to transfer over the injector data. Next would be a decent compare of differences between the two other than just the displacement difference.

Thank for sharing

I do compare as normal and change some parameters truck runs as it should be

But what I'm interested in is to write originally 6.2 file with the same operating system Number without any changes.

Segment swaps are the way to go, this way even VT and VVE gets easily emulated