1989 Chevrolet Blazer throttle body injection

i recently did a body swap on a k5 replacing the blazer body with a 1970 cj5 i cut 4ft off the rear of the frame and installed a new fuel tank and ran new lines filter, everything. the CPU is hooked up and i used wiring diagrams to wire the ignition system. now the fuel is making a round trip back to the tank and the engin still wont crank over. ive already cleaned the injectors.