impression

hi everyone, please can you help me, by telling me why my leon cupra 1.8t 03 reg, sounds like a tractor!!! when i first start her up,she runs very noisy for about a minute, then goes quiet. any ideas? to listen click the link. http://www.youtube.com/watch?v=UTIAFzoZn3I

Just about to book my custom rolling road remap. (well awaiting confirmation of free times) Have a Leon FR+ TDI PD - which i guess is putting out the correct 150bhp. Looking to get as much power as possible and they are mentioning i can expect between 196 - 208bhp, has anyone gone down...