You should check the fuel pressure and run a pin connector test at the ecu instead of just throwing parts at it. At least for testing purposes you can use any afm from 75-78 on a 78. If your fuel pressure tests ok, and it passes the pin connector test, then it could be your ecu.
Z man of Washington
1978 black pearl show car-retired, I bought it new
1983 zx turbo daily driver, modified, 3rd owner
1970 240 #23 being restored
1970 240 #638 driver
1973 240 roadster being built
about 70+ other z's & zx's
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