That map seems really rough to me. It seems really harsh to have two cells next to each other with 20 degrees difference. I started with a map like that and it felt like I had flat spots where the power was not significantly different from one RPM and MAP to another. I later smoothed out all the transitions, steadily ramping up and down. That gave the car a feeling of always having more power with increasing load. I suppose that doesn't make the car faster, but just makes in more enjoyable to drive.
