I have a BJX 150BHP engine that i have transferred to a MK1 Caddy. The ecu tune has had SAI and Rear 02 deleted (along with a cat removed).
LDRXN has been tweaked slightly upping the boost by 1 PSI and holding onto boost further up the rev range.

The engine runs and drives well but is not reaching the desired boost with wastegate duty pegged at 85-95%

log file and chart attached.

i think its one or more of the below is at fault

Boost leak.
Failing wastegate actuator.
Failing boost valve.

Is there anything else I have missed or nuggets of wisdom before i go down the proverbial rabbit hole looking for mechanical faults?

Nigel

Im relatively new to this please could you explain. Am i looking at the wrong thing?

Thanks, that's what I needed.

Sort of got to that point last night, unplugged the n75 and got the same results as before.

I tested for boost leaks last night, that all turned out good.  I do have a small concern about the diverter valve leaking at higher pressures.
something to watch as I creep the boost levels up.

I reviewed my notes on my wiring conversion this morning so will check wiring tonight, along with the other things you have mentioned.

Thanks for the response, I will post my findings later.

NP, thanks for the update. Always appreciate it when people come back to add info, it is always helpful for everyone.