Hi, after converting from STi3 2.0 to 2,5 USDM STi and before new turbo and FMIC (not installed yet) I tried to do some map optimization.
I use HAltech ECU and here is my LOG.
It is 3400 revs and only cruising on Highway on small load.


Is it safe? Which is safe A/F for this load? (550mV)

 

Maybe an O2 loop could have some effect on (works under 30% of throttle and could modify maps by 20% + or -). This correction loop counts with 8 engine cycles

 

Low load 3300-3500 revs on Highway hillclimb :-)
At the end throttle on 50% and higher load around 0,6 bar (for my safety I have pressure delimited on 0,6 bars)