Hi
My friend has a big problem with boost in 1.8T 150hp tuned to 260km - k04@380cc injectors, ic etc.
ECU set WG duty cycle to 0% in ALL CONDITIONS, there is no dtc stored in memory,
ecu request 1.2bar from k04, but actual is only 0.5bar (with 0% N75 WG DC)
Check for leaks.
Check dv
Check pcv valve.
Breather valve.
Temp colant sensor - replaced - and read 92C.

Also the SAI and N249 is out , and they are changed to resistors, and there is no dtc.

Fuel trims are idle 0.2 and partial about 3.6 %

Try to clear codes, try to adapt ecu on 00 block to reset ecu adaptation.  But WG DC never go over 0% !

There is no CR, and also there is no misfires.

logs

http://vaglog.rtnet.pl/arekastra_117396.html
http://vaglog.rtnet.pl/arekastra_117397.html
http://vaglog.rtnet.pl/arekastra_117398.html
http://vaglog.rtnet.pl/arekastra_117399.html
http://vaglog.rtnet.pl/arekastra_117400.html
http://vaglog.rtnet.pl/arekastra_117395.html

I have no ideas what is going on ?

What do You think about  this ?

pedal acc position and throttle plate was loged , 100% during WOT....

what else could bring 0% WG DC ?

114 block in last column have WG duty cycle.


we also check fuel pressure it was 3.1b on WOT with boost 0.5bara, so fuel pump is dead , but WG DC aren't affected directly with bad fuel pressure...

I started to think that soft in ecu mess something.... we unplug maf , and there is no dtc stored in ecu.... maybe tuner blocked dtcs or..... ecu is dyieing ?

phlia_dot unfortunately i can't get me7l logs....

but I could do any vcds logs what you want.

It is very odd case. I have never before search problem so long, always found the solution, but this time.... i have no ideas what to do next....

NEW info
I get the info - in this ECU there is implementation of boost by gear.
on 1 gear ECU cut the N75 to 0%
but the ECU thinks that car always go on first gear, we check vss , and the ecu see the vehicle speed, so i don't have idea what is wrong ?

How ecu determine gear ? Vss and rpm  ? 
Few days ago we get dtc 18056  powertrain bus data - failure - intermittent. so probably  there is some problem in ABS ECU i think...
We will check can bus , and we also plan to check abs dtc, abs wheel speed sensor and so on...

Try setting TVLDMN to 10. If WGDC still remains 0 then that confirms B_ldb never sets.