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I have a 90 hatch std and i convereted to MPFI all wiring is done correctly. When i plug in a PG7 or PM6 ecu i get a code 4 (cps) on the ecu. If i plug in my old CRX Hf ecu PM8 i get no codes and it runs fine. Could i have the incorrect distributor. Is there a difference between a CRX Hf dist...