I just bought a used 2002 wrx and it is in mint shape, lady driven. I have been bagging it, haha, too fun to not! Anyway, a few days ago when I hit the throttle it will rev to like 5000 with no kick, then drop to 3000 and climb rpm with power. Is this my clutch? Turbo? Leak somewhere? Any suggestions on where to start trouble shooting is appreciated.