He's told you that so he can charge you an extra fee for the ecu itself and then an extra fee to map it. IME its no better when you look at the spec sheet for each, unless someone can correct me!? Once youve plugged your OFAM ecu in, load your laptop up with tunerstudio and start mapping it yourself, everytime you make a new modification you can re-map your car to suit, and spend quality time on it aswel, mapping different loads and rpms and various boost levels etc rather than just mapping flat out throttle like most tuners would...
Check my sig out m8!