PG7 is from USDM 86-89 Integra D16A1 - 86-87 will only work on 86-87 engines which have vacuum advance ignition - 88-89 will only work on engines with electronic advance ignition - the JDM ECU for the DOHC ZC is PM7
86-87 PG7 looks like the one on the left and 88-89 looks like the one on the right
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