Started to get different reading on my boost gauge a few days ago. I’ve concluded that when the car is cold its boosting as it should.

when the engine bay is warmed up the car is at 0,5 bar at some pulls. And at -0,8 while cruising with no throttle engaged. Some pulls it goes up to 1,3 as it should then barely gets to 0,5 the next pull. Car behaves as normal…

anyone who’s had the same problems?

 

Boost leak check all lines and also the boost gauge if mechanical

 

Could be a damaged wastegate if you dont have a boost leak. I would check the wastegate and see how much psi is needed to open it.