I have recently fitted a new head unit a set of 6x9s, 2 amps and a bass tube to my k11 1.0 16v p-reg it plays fine when engine not turned over but as soon as you turn her on i get serve interferance. Can anyone PLEASE help or suggest anything to help me as cant wait to have decent tunes in her. I have no interferance when amps turned off. So head unit fine. :k11motors