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

    1. 10-05-2012 10:52 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

      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.

      Thank you everyone!
      Last edited by surfo; 10-05-2012 at 01:54 PM. Reason: New LOG

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