Reading the Alfa Giulia review just now (where the writer was saying that there is no "off" button for the ESP and it cuts in very early) I was wondering if anyone makes an aftermarket system or a coding system to enable the user to adjust the amount of electronic stability control.
Bosch make the M4 kit, used for racing but gives you adjustable tcs/abs and a user setting you can programme yourself. Wouls assume as its a retro fit universal kit it could be made to fit. Not cheap at circa £5k nor a 5 minute job.