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  1. AGUMK4

    1.8T M3.8.3 tuning

    I think you may just have answered your own question there dude, you state your old dv was not holding vacuum. If it's leaking it's doing anything but working correctly, hence, since changing to a bov it's no longer leaking at idle and would run smoother than before, just like you said. With...
  2. AGUMK4

    1.8T M3.8.3 tuning

    Also watching this thread, have been toying with the idea of fitting a megasquirt ECU I have laying around or going me7.5 instead of running my M3.8.3 but would prefer to keep it original. I have logging and flashing capability so I hope to follow along and contribute where I can. I have some...