Ok somewhat confused with boost control

Is there a go to for a fuel sending unit? Gas gauge is wonky. Don’t know if it’s that or the gauge. Might just swap out the sender either way.
Check grounds behind dash. Mine had bent pins and wasn’t working
Yeah that was prob gonna be the next step. I just figured I’d be in there swapping pumps I might as well get a sender I guess. They do t seem to be that expensive but I know they aren’t all created equal.