That doesn't mean your weren't getting det though mate, unless you were actively monitoring it.
@The OP, Markcro on here is running a hdev chip on E5 Maxol fuel and has had recent dyno print outs that show it being pretty safe. If you'll be be happy with a figure then a chip is a a fairly straight forward way to go but note 2 points:
1. You will get used to / bored with the power, it'll feel slow after a while so having some remap potential might be a good thing.
2. Chips are generic and all engines are different, just because all 200's came with the same type of engines (ca or sr) doesn't make them the same. some will be good and give good results, some not so much.
Hope that helps