UKVETTEHEAD
Member
Does anyone know what the difference is between the 1997463 knock sensor used only on the Collectors edition and other sensors used on early C4s. Both have the L83 engine. The 1997463 is unobtainable in the world it seems. I am going to experiment and fit an early C4 unit and see what happens. My collectors has a performer cam and aluminium heads so the dynamics of -knocking or pinking- may be different to a standard L83. Also, the collectors has an ESC ( electronic Spark Control) controller which I believe amplifies the knock sensor signal in order for the ECM to react and retard the timing. This is also unobtainable.