I got a 02 Si, everytime i drive the car and turn the ignition off, i feel a little rumble.

 

And how does this make you feel?

J/K it's prolly just the vibration slowing to a shake when you turn the car off because of your soft stock mounts. I think most all cars do it a little bit, some more than others.

 

better watch out r kelly is coming out of the closet