265 RS265 Iriduim vs Platinum

Discussion in 'Mechanical - Engine, Gearbox, Exhaust etc' started by Michiel, Feb 11, 2019.

  1. Howzit guys,

    Has anyone on the forum tried running their RS250/265 with normal platinum plugs? I know the 3 electrode plug the RS225/230 uses will fit a RS250/265.

    Just need to know if it has been tried before and what the outcome was.

  2. Mikeyjp

    Mikeyjp RSM Club Member

    Only buy oem
    EBA66 likes this.
  3. Only use iridium never actually done an A/B test
    With 3 electrode plug can’t change gap from factory setting
  4. EBA66

    EBA66 RSM Club Member

    stick to oem
    I had iridium and for a long period of time I was getting random top RPM missfires.
    Tuner friend of mine advised me to do oem only for oil filter and plugs on mk3

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