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      08-19-2020, 09:12 PM   #1
proboner
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Drives: 2003 Z4 3.0 6-speed
Join Date: Feb 2017
Location: Mountain View, CA

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Suggestions on where to go with N54 Z4

Hi All,

I just recently purchased a 2011 sdrive35i that is pretty heavily modified:
  • Pure DD turbos
  • AR Design 3" catless downpipes
  • VRSF race intercooler
  • PSP outlets
  • VRSF charge pipes
  • Walbro 450 fuel pump
  • Index 12 injectors
  • PR ignition coils
  • New oem HPFP
  • MHD tune with custom help from Ken at Edge

I'm a car guy through and through, but the world of N54 is still very new to me, so I'm looking for a bit of help navigating my next steps. I reached out to Ken at Edge and he indicated that the last datalogs he'd seen showed the tune was on point, so I should be good to go just running it as is at around 18psi.

My planned next step is to get access to MHD, which requires me buying my own copy. I've been reading a bit about JB4 and am somewhat interested just from a safety/precaution perspective... sounds like you can set it up to enter a sort of limp/safety mode should AFRs/fuel pressure/whatever throw a warning. Thoughts on this?

Just looking to keep this car happy and running will in it's current form, and understand my options should I decide to turn anything up.

Thanks!
Appreciate 0
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