A4 130 TDI making sucking noise between gear change and from 1000-2000 rpm??

Hi guys.Just noticed my A4 makes a whats best described as sucking the end of a drink thru a straw sound during gear change(when pressing clutch).Also does it between 1000 and 2000 rpm then dissapears.Drove my mates A4 sport 6 speed last night and his does'nt do it.Also seems to have more torque but maybe thats because its the sport.Anyone any advice on this?Much appreciated and thanks for reading people..

i had a sucking noise coming from mine but it was just a loose connection onto the intercooler as the clips wear away and suck excess air in wort having a look ...

Thanx mate.Any advice on the wat i tought 6 speed sport seeming to be quicker than my 130 se??

Crasher you around mate??Would love to have your opinion on this..Thanx in advance..

Difficult to tell the sucking noise, its not the turbo just spooling down is it?, they chatter a little bit.

I think the 6 speed and quattro have a little more torque than the 5 speed, same engine, just different mapping. Just adds to the feel of a 6 speed.

thanks dave....