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    VWVortex


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    Thread: HELP!! Lots of Missfiring, and Lean Mixture... GTI K04

    1. 10-05-2012 11:52 AM #1
      Hi everyone!, I´m having a very weird issue. At wot, car starts fine but when turbo spools low fuel pressure starts dropping, high fuel pressure drops also (can´t say wich one makes the other one to drop), and car starts to have lean conditions and missfiring badly at around 5,800rpms...

      Parts already Changed:

      Low fuel Pressure Pump
      Module that has on top of it.
      HPFP Cam Follower was pretty bad so changed for a new one.
      New Spark Plugs BKR7
      Fuel Filter.

      The only code is Low fuel Pressure

      Car Specs:
      2007 Golf GTI MKV
      Autotech HPFP
      APR K04 Software
      S3 Fuel Injectors
      S3 Turbo
      Twin Cooler
      KN Typhoon
      DP
      Cutout

      Car has being runing perfect for more than 1 year with this mods, the newer mod is the Twincooler but it would be impossible to think hat this can cause that, there are no Boost Leaks.

      LOGS:
      https://www.dropbox.com/s/6dege3el3damcn2/Log.xlsx
      https://www.dropbox.com/s/c5sdb2s92pi79bn/LOG2.xlsx
      https://www.dropbox.com/s/sv5u2d5h4yesoya/LOG3.xlsx
      Thank you everyone!
      Last edited by surfo; 10-05-2012 at 02:54 PM. Reason: New LOG

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