High boost problem in hot weather - 1.8T

[rames]

hello, somebody help me plz
Normally 1.8T engine must have 0.6 Bar pressure. In cold weather my car have no problem, boost is max 0.6 Bar , but in hot weather boost is very high, sometimes it increases to 1.0 Bar. It is problem with some valve, but i dont know which one. N75, 710N or which?
Sorry for my English :(

[Overboostin]

In warmer weather, the air is less dense, so the turbos need to work harder, creating more boost, to have the same amount of power. It's normal.