Actually uploaded the post on wrong forum, hope some one can help!.
Hi everyone!, Iīm having a very weird issue. At wot, car starts fine but when turbo spools low fuel pressure starts dropping, high fuel pressure drops also (canīt 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
The only code is Low fuel Pressure
2007 Golf GTI MKV
APR K04 Software
S3 Fuel Injectors
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 was boost leak on the DV but got fixed, a/f got better but still Both fuel Pressures Drop really bad!!
Thank you everyone!