Hi All New to the forum, this is my first post so hope it's in the correct place. I have recently retrofitted RNSE, MFSW and bluetooth (genuine audi parts) to my 2007 2.0 sline dsg A3. Everything working fine however background noise for telephone call recipients at speeds of even 30mph is terrible (got the wife to drive the car and call me). Everything was brand new and no cables were damaged when installing. Not sure what to try now, is this noise to be expected. I have never had this level of background noise on any of my aftermarket handsfree kits. Thanks in advance.