Picked up my second 430 this week and its a beauty, pics to follow. Thought you all might enjoy this: https://www.youtube.com/watch?v=JCc5p3wIyNc&feature=c4-overview&list=UUMtOz65U2HPjc1yiSbkrX1A
All stock 430's will do this under load when driven with some 'spirited' driving. Only mod I have is Tubi exhaust.