E-manage blue intercepts, but still has a great range of control over timing and injection..with the boost sensor it is extremely good.
I haven't played with the ultimate yet, so I'm not sure what logic it uses to get around the speed cuts etc etc, needless to say it hooks up to a lot more ECU inputs than the blue. It allows individual control over injectors and timing per cylinder..which is pretty good for a piggy-back.
I'm currently using a bikirom though (daughterboard) for full control of the factory ECU
The blue is perfectly capable of getting you over 250rwkw, the ulitmate gives a few extra wank features that you may never use. One good feature though is the 'self-tune' which attempts to steer your AFR to whatever you input, it then adjusts fuel delivery to match...very cool if you can get it running correctly with a permanently fixed wideband O2 sensor.