I've had my mind made up on a Greddy profec B spec II for some time but it seems as if I have the oppprtunity to get the E-01 at a very close cost. What makes the E-01 so much better/cost so much?? The AP will be controlling my fueling so does that negate the E-01's ability to function some of it's features like logging the boost curve. I think if I can log my boost that should make tunning boost much easier and be worth $50 extra bones.