ICE Upgrade - Specialist Recommendation (PJ/KL)

[shanbala]

Good day to allow Sifus,Planning to carry out some minor upgrade to my wifes X3 ride. She is not "happy" with the sound in this stock set up.Not wanting to mess up the sensitivity of the wiring, i am seeking a specialist who will be familiar with type of "sensitive" (maybe my imagination) cars.Any ideas on such a person and/or establishment i can refer to.My wife's rides - 2006 BMW X3 2.5cc M-Sport (UK recon)My contact : 017-235 2099