You can easily find the Efficiency calculator under "card counting" which is under site features. You can also add the direct link : http://www.blackjackinfo.com/card-counting-efficiency.php to your favorites if you really like that much :grin:
I threw in the values for Hi-Lo and of course got the expected values for all three variables.
I have a friend that finds it easier to count when he inverts the tags (i.e., "plus for high" is an easier correlation to make for him than "high is good"). So I threw in 1/-1/-1/-1/-1/-1/0/0/0/1. The BC and IC changed sign but not magnitude, as I expected. However the PE changed magnitude but not sign. Why?