Hi
I don’t know what happened on FanOpel but your not there anymore, talked to an admin there and they didn’t deleted your account. The forum is Romanian not Spanish or Italian and it’s all real.
I have registered here to confirm that I have retrofitted ESP on Z16XE and all is up and running. In 2010 I’ve retrofitted TC and last year I upgraded to ESP. You need to have discs on all wheels.
Most off ABS pumps are simple without TC only ABS. TC or ESP can be retrofitted on all engines on Astra G except Y17DT and Y20DTH with PSG5. It’s easy if you have some skills and if you know what are you doing.
Pumps ident code that support ESP are EK, ES and EX. No difference between them on connection just new revision units from Bosch.