Trying to figure out an extreme rich condition between 1500-3000 rpm, engine breaks up bad and new plugs black in minutes (running on stand). Would be helpful if someone could share a 502 or 454 mpi stock tune for me to compare.

A little back ground: MAP, IAC, TPS, manifold temp all where they should be, base Timing 8 deg , tried 10 as well. , fresh ignition module, coil, cap, rotor, wires.. 32 psi fuel pressure steady, mechanical to high pressure pump (no VST) injectors re done and tested by Marin, ecm checked ok by OBD diagnostics. Compression good.

My cell is 508-951-4869

thanks everyone