just remove the mufflers if your not going to modify your x5 any more i have an x-pipe on my x5 and i got these euro sport mufflers off ebay that im going to install...they only cost 15 dollars each muffler!!!! and they are nice

__________________
Black 2002 X5 4.4i w/ x-pipe, euro sport mufflers, umnitza euro headlights, hid fog lights, led reverse lights. led interior lighting, led license plate lights, de-badged, black grille, tinted tail lights, carbon fiber emblems, smoked out side markers.....more to come