Largest factory setting for the C plus is 525/ 1850 torque. There are also 525/ 1650 programs too, but 1850 is doable and common. I would avoid...
just remember, even if you put something on new, it can still be a bad part. New parts fail all the time (sadly). I would look through insite to...
what is your engine serial number? I'm not familiar with the 1580 CPL, but I can check it out for you