Hey Mate, There are lots of information on this forum about exhausts and different options people went for. I suggest having a read through this part of the forum. There is no reason why you can't go for a full exhaust system now, probably would save yourself some money getting all done at once. Are you worried about warranty? If you do get a full Turbo back exhaust, you will need to get a tune. If your just after a bit more noise, go for a cat back system and keep your warranty. Cheers Ben