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

[surfo]

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!