SAFC II/ECU Problems

[4Las90]

I have a 1990 Plymouth Laser RS Turbo. We just got done installing 550cc injectors, 255 hp Fuel pump, and rewired it. We wired the SAFC II and hooked it up and it doesn't read anything. We checked the wires 5 or more times and they all look right. We took the SAFC II off and hooked it up to my friends who already has one on his car and it works.

An ideas? Could it be the ECU? Ask me any questions

Thanks