More cam questions

The XE cam is larger so it moves the power band around (UP) and the heads are lacking for the cam.
Did you use actuall head air flow specs and cam specs in the program.
Moper is right about the program. It's a good learning tool. It can fairly do a good job. Remember, it's a $40 program. It can help in things like choosing a cam, but do not take a ton of stock in it.The more acurate the info, the better the result.