i have this problem ever since i tuned my car with a custom tune. every time i turn it on it starts to idle as if the car is trying to turn off and my boost psi instead of being in -20 as usualbefore drivin it goes up and down in a weird idle. 2 minutes later it starts to idle normal again and am able to drive. but when i drive it without letting it idle weird when i first turn it on, the car starts acting really bad and at certain rpms it bogs out and wont let me pass more than 3k rpms it struggles alot. does anyone have any idea what this can be?

anyone?? any ideas?

Do you have hptuners? If so send me your tune file and I will take a look at it.