di3namix wrote:Is it a rattle or vibration bro?
Rattle can be engine knocking/pinging when you accelerate.
Vibration can be a lot of various factors
as far as i concern, there's no vibration. im not sure whether im missed on that one, if there is any, there must be a slight vibration because i didnt realized when im accelerating. i found it a bit funny because the rattling noise becoming less when the speed is between 200-250kph but I found it really annoying when it gets from 100 to 200 (feel like driving a pickup lorry

), but i wont maintain that speed for long (normally less than 15mins).
Im not sure whether this infos might help you in narrowing down the problem. Anyway, thanks so much for your concern.