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    P9K vs. P72 ECU

    Hello I have 1999 EJ9 with b18c4 swap. I done the swap 5 years ago with JDM OBD1 P72 ECU. I remember that we added a knock sensor to the engine block (Stock B18C4 don’t have one) and the car was great, no issues for the last 5 years. 2 months ago I started the car and there was a cel pops up...
    • EJ9B18C4
    • Thread
    • b18c4 cel code ecu ej9 gsr obd1 obd2a p72 p9k vtec
    • Replies: 1
    • Forum: Engine
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