n55 tuning

  1. B

    Possible DV Leak? Not meeting Load/Boost/MAF Targets

    Hello All! Fairly new to the BMW / MHD world but have quite a lot of experience tuning other platforms using the COBB AP. I recently got an MHD for my 2012 135i (DCT) and have been experimenting with the OTS tunes while I figure out self-tuning (amazing to find public XDF's for TunerPro, love...
    • byebyeVTEC
    • Thread
    • diverter valve mhd n55 tuning
    • Replies: 2
    • Forum: N55
  2. G

    Seeking advice DIY tuning F-Series N55 - Overboosting

    Hi guys, I'm new to the forum. I've been looking for information on how to properly go about tuning the late N55 motor (version without commanded WG) for a while, I've done some experimentation but still have a few issues to iron out. Some guidance or links to good resources would be greatly...
    • geobow
    • Thread
    • bootmod3 n55 tuning
    • Replies: 5
    • Forum: N55
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