tuning diesel or petrol (interested on diesel)

[Lucoz]

hi all
i've seen on the net a lot of addictional ecu for tuning, It looks great, 25 bhp more and other miracles, my question is there is a serious way to keep a reasonable margin of reliability improving performances, how much is the margin that the makers leave for performance improving ?
and which is the component that have more margin, turbo boost, ecu/pump pressure remapping ....
thanks

[DAM350]

for which car

[Lucoz]

signum 2.2 dti y22dtr psg16 it looks that there is a hole between 2000 and 3000 rpm

[jnoroeste]

signum 2.2 dti y22dtr psg16 it looks that there is a hole between 2000 and 3000 rpm

Hi m8, each engine and system is different, in your case...is a well known case of death of psg16 fuel pump around 200000kms, so dont waste your time with, also just a few tools are able to read and write this map files.
Regards.