Where can I find info on a custom FMS chip?

[K.C. 5.0]

Yes, the mass air is set up for the injectors. I'm running my fuel pressure at 34psi. When I first put the injectors and mass air on I left the fuel pressure at 40psi. But it seemed to be running rich. At least I think it was. After turning the pressure down it seemed to idle better and pull a little harder. I was thinking I may need to pull the plugs to see if I might have fowled any of them while running to much gas. Does anyone know how to tell if your running rich or lean.

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95gt 80k, MSD 6AL, MSD coil, pulleys, fpr, cold air kit, off road h-pipe, flowmasters, 3.73, 9mm wires, mega bite jr lowers, kennybrown subframe connectors, edelbrock performer intake, 70mm TB, 73mm C&L, 24lb injectors Aluminum Driveshaft, Tri-Ax shifter.