Do muffler muffler delete axle back exhausts harm the engine?

370zsport

As I read through google and this forum I keep seeing how frequently people are saying how normal these issues I am experiancing are. I just dont see how a pulsation in the clutch pedal is normal, let alone a car this expensive with only 20k on it. Maybe I have just been spoiled with integra transmissions and mr2 transmissions. Or maybe I shouldnt assume that a car in this price range should be smooth as butter. Oh well, if you guys feel its nothing thats going to cause a failure, then I will take it as a normal quirk.