Anyone using the greddy computer piggy back. i want to know if its easy or hard to use and understand? easy or hard to install with a factory wiring diagram? and does it include software and does it come with any preset maps?

It would be cool if i get straight forward answers to these questions, and would the Greddy be more useful that a rising rate FPR to add fuel or is the FPR easier to use understand and get results from? thanks for the help fellas.