You're not losing your mind, like everyone has said, a car ALWAYS feels faster when you are the passenger. when you're the passenger, if he guns it, it's easy to sit there normally and let the torque throw you back in your seat. BUT when you're driving you're focused on driving, your body gets tense, and you stay in the same position worrying about when to shift next, like someone said before. AND it's you just getting used to the power, like someone also said before, the only cure for that is MORE POWER!
That thread is to long and don't have time to go back and catch up on everything. Man, I'm some envious of that KB you have. I'll have one when I win the Powerball.