As you probably know I'm in the middle of a custom/hiboost build. every things done but the ECU. After reading through a ton of threads here I discovered the Haltech isn't up to snuff. Doing a little more reading I and talking to someone else on here I came across the very well priced XFC. Is it all the its cracked up to be or is it hype? Any FIRST HAND experience and advise would be much appreciated.