Picking up a holdover 2011 yz450 that I'm using for hare scrambles. I've heard they can be a handful in the woods. Should I buy the yamaha FI tuner or Yamaha flywheel weight? Thinking of G2 throttle cam down the road if needed too. I'm riding an RM250 and previously had a yz426 and yz250 and I'm not sure what to expect power wise from the new 450?