I have my G430W tied to my D100/HS34/AP74 autopilot system. When I am flying an RNAV approach, all the turns on the approach plate that lead into the turn onto final perform "turn anticipation." I can see the dotted anticipation turn on the 430W and the autopilot flies the anticipation course. But, the turn onto the final approach course never gives me turn anticipation and the autopilot flies through the final approach course before it turns back to intercept. Why doesn't the turn to the final approach course have the turn anticipation?