I have an 86 Rx7. put an 88 turbo rotary in it. put ecu, boost sensor and airflow meter from turbo engine in my car. The car cuts out at 4000 rpm and backfires when I let off the gas and does not idle when warm. I already change the fuel injectors, mass airflow meter, boost sensor, all the filters, spark plug,fuel pump checked grounds. I put a stethoscope to the sencondary injectors and the fuel injector on the rear of the engine is clicking spontaniously but the other one is good. the wires going to the airflow meter and boost sensor were cut and not there so i pulled the wires from pick n pull and wired them from a non turbo car to my wiring. been trying to fix the problem for a few months and cant figure it out. everthing i did made no diference. Anybody have any idea or pointers???

 

Is the timing set correctly?