[alby on boost]

my dads 328xi coupe seems to be clunking pretty hard over small bumps and small holes. my evo has a stiffer suspension than the e92 and it doesn't sound or feel as bad as the e92 does when it goes over bumps. is this normal because of the xi? i'm thinking either a) its because its an xi b) its because of the sport package c) the car was ordered and when it got here, the techs forgot to take out the plastic pieces in the suspension

thanks a lot!