Hello everyone im new here, and to volvos. i just bought a 2012 volvo s60, and when i put it in sport mode it feels hard when it shifts? why is this and what can i do? also i know its not a sports car and only a 5 cil but can i upgrade the intakes and small things like that for power with out the sensors going off? also and good exhustes? im only 24 still young but the car was to good to pass over.