7875 + 5.9 + E85 + Megasquirt

Runs fine on your old tune. Sounds like they sent you the wrong injectors. You would be rich everywhere especially before boost when your fuel system isn’t even slightly taxed.
I tend to agree. It’s seems I’m just flipping the math to get the same results. Less required fuel X Bigger VE table values for the 142s vs Bigger required fuel X smaller VE table values for the old 80lb injectors.