T-5R, snoring from the direction of the machine, as well as no full thrust.

Moin, regarding my T-5R, I am standing on the hose at the moment. If I start the car in the morning, everyone is quiet except that the hydros clack a bit. After a short time a strange “snoring” starts, which comes from the direction of the automatic transmission. But I switch from P to R or D everything is quiet. Only in idle it says P and N snorts. What could this be?! The second question, the Bock does not bring full power. My 2.0T is noticeable researcher to work. He builds himself kei Is already shameful when a 325i is sawn… and when a tacho is 200 at work. Normally he would have to bring 235 loose according to Schein. Thanks for the help ;-).