1. When you say "chipped", what do you actually mean? Are we talking the ebay "chips" or are we talking a proper retune?
2. What else has been done to it?
3. No, not really. Ecotec's aren't really designed to be performance engines so it will take a fair bit of coin to get them going. And then some bloke with a GEN who's spent half as much as you will blow you away anyway. Trust me, been there, done that.