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ECU file service - stage 2 map for N55 with meth injection

VVanosVictim

@vanos_victim

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Looking for a file service that can provide a stage 2 map for N55 with methanol injection support. Most tuners only offer stage 2 on pump fuel.

Car has:

  • Catless downpipe
  • FMIC
  • AEM water/meth injection kit
  • Stock turbos

Want to maximize power on the stock turbos with meth. Target is 450hp+. Who can do this?

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2 replies

  1. #1
    NN55 Gang

    @n55_gang

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    Running a similar setup on my 335i. Stage 2 with meth injection on the N55 is a sweet spot - around 400-420hp depending on the tune. Make sure your meth kit has a failsafe that pulls timing if the meth runs out. Snow Performance Stage 2 kit works well for this.

  2. #2
    HHybridTurboGuy

    @hybrid_turbo_guy

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    The key with meth injection on N55 is the nozzle placement. Mount it after the intercooler, before the throttle body. Use a 175ml/min nozzle for stage 2 power levels. And always run a 50/50 water-meth mix, not pure methanol - the water helps with cooling.

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