Drag Strip tips and advice needed.

That car should MPH in the 115+ range without much issue and actually probably in excess of 120. Something is off.

If the fuel pressure is like most other FI setups 40+, the -6 line likely isn't going to be an issue.

Don't recall the build, but shift it manually in the 5200-6000 range and see what it does. I'd be more concerned with MPH than ET right now. You can work on different launch techniques, but, the MPH is not up to snuff.