yeah as above fit a new thermostat and fan switch and see how it behaves. standard boost is about 7 psi i think so your only slightly above that at 0.6 bar ( about 8.5psi ) . standard ecu's will cut the ignition at about 10psi so i'm told ( never had a standard one)
a good idea with any turbocharged car is to have it set up straight away so you know it runs sweet.