it does exactly what it is said to do. A small learning curve is needed with the present program on the EBC, duty cycle instead of a psi number had lots of people confused.
In the end it has worked out very well and after I set it the first time I've never touched it since. the BD kit has turned out to be a very easy to use kit and once I got my fuel numbers set proper to where I like them I haven't had to change a thing.