A quick one

Does anybody know what is the maximum boost pressure that I should read from my standard 106 Privilege ?
I cannot find this info on the net and I am reading what I think is an abnormal overboost.
Under load around 1.65 Bar (+ barometric of course) = 2.69 Bar inlet pressure.
It’s generating oil leaks from almost every orifice it can find its way out including the breather resulting in very
wet inlet system.
My 2003 model tops up at 1.14 Bar
Thank you all
Maz