Car hissing me off

[Ady TDI]

When i bought my car (150 tdi) last week it was lovely, when i floored it i could hear the air coming from the turbo and the car went well, i hadn't really drove it hard poodled along, tonight i went to go round a car and there wasn't much there, couldn't hear the air noise either 

Hoping just a hose has come off, but anyone know what i should be checking

[Rhyso]

pipes - check all pipes for cracks, splits, loose connections etc

have you got smoke coming out of the back?

[Ady TDI]

No smoke, will check the hoses tomorrow

[Ady TDI]

Cant see any hoses loose, or split, i was in 2nd last night along a straight and it wouldn't go into the red, was just screaming so had to change gear.

Having it connected to vag techno to have miles to empty enable & vagcom later so hopefully this will throw something up.

[Ady TDI]

Just had vagcom connected, no problems  why is it then that in my old 150, i used to give it some in first, go into 2nd and the traction used to go ape, in this i do it and the traction doesn't have to do anything as there's nothing there