Yeah the performace kit is a bit of a scam. It includes a whole new airbox,( with one breather hole blanked off and a few slots in the top cover) a blank plate for the extra crankcase breather on the side of the head and the akro exhaust. Haven't priced it in aus but have seen overseas it looks to be 900 odd euro and some countries wont install the map without buying the kit. Mine runs a large unifilter pod, wings exhaust and put a t- piece in the crankcase breather hose. The dealer just upgraded the map no probs. Worked out probably half the cost of the husky kit and the same result. I may fit the power commander and have it dynod properly one day but no hurry. Ive seen another aus user with one and the dyno shows a slight increase over the performance map but all in all I'm pretty happy as is. Some overseas look to be going the power commander route as the dealers aren't as accomodating on the performance kit/ map as its for offroad use only, blah blah blah.