They'll love you over on the rsoc if you start on about phase 1 & 2 lol
There isn't really any such thing to be honest, as there weren't enough changes to warrant calling them phase 1/2, but as well as the points already mentioned the later cars had a different map (af), which is renowned for a having what they call an 'af cough' where they have a slight misfire at 4k. It's not a major problem though, and if you remap the car will sort that out.
I've only had mine a month or so and it's an awesome car, handles brilliantly for a fwd car and with a few mods they go ok too