[KingLT1]

The older XDI +30's will do 2900 psi with no issue. I believe the newer XDI +30 and +50 are now rated for 3200psi max. The XDI +65's(discontinued) are rated to 2600psi. Never tried higher because the LPE HPFP couldn't keep up. The newer +70's are rated for 2800psi. XDI basically raised the ceiling 2-300psi for all of their injector offerings.

FIC +30 are hit and miss if you try to run them at 2900psi, they seem to have less issue around 2600psi or lower.

None of this mattered much in the past with the LPE BB HPFP because it doesn't seem to like running much more than 25-2600psi. Now that the Goliath pump is available, I would get the XDI and run LT4 pressure(2900psi) to start.