Greddy Emanage Ultimate. They make a plug and play harness for it, which means you dont have to cut any wires, literally plug in...
It has all the features of the Power FC, but as a piggy back retains the factory goodness of knock control, cold start up, etc... unless you want to change them, which there is a capacity to do...
Also, it has anti-lag and a whole host of other crap... Cheaper and newer technology then what the Power FC is...
My 2c