Let's see if i can describe the problem in English 
I drive a 03 9-5 Aero Automatic that don't feel like 250bhp, it feels like my old 9000 2,3T was quicker.
Anyway, i tried to disconnect the R-hose from the solenoid valve(i suspect that the problem is the evap system) and nothing changed, still was "slow".
Then i gave up for a while. Now that it's summer again, i want to fix it!
I discovered that a hose had come loose from a t-junction on the r-hose.
Can this cause the problem that i'm having?

Blue: Leeds to the first one way valve
Red: To the inlet just before the turbo
Green: To solenoid valve
Yellow: T-junction
I drive a 03 9-5 Aero Automatic that don't feel like 250bhp, it feels like my old 9000 2,3T was quicker.
Anyway, i tried to disconnect the R-hose from the solenoid valve(i suspect that the problem is the evap system) and nothing changed, still was "slow".
Then i gave up for a while. Now that it's summer again, i want to fix it!
I discovered that a hose had come loose from a t-junction on the r-hose.
Can this cause the problem that i'm having?

Blue: Leeds to the first one way valve
Red: To the inlet just before the turbo
Green: To solenoid valve
Yellow: T-junction