Hey guys when comparing the "e" and "i" don't forget about the torque difference. The e was built with big torque to pull the car easier without the motor having to rev to 6K. Not saying the e is better than the i but it will take serious ride in a bad "i/is" to convince me they are that much better.From what I understand the "e" head is changed because it has less cam bearings, and the cam will flex at high RPM, thus having a low limiter. However, the bottom end is said to be as good if not a little better than the "i". From this I have gathered that with the torque and HP of the "e" motor, with a bigger revlimiter and the larger cam of the "i" will ultimatly make a more performance oriented motor. I ask, Is this true?