I have this problem with my turbo , it makes this loud whistling sound when i accelerate , from new. Sometimes it is very irretating and you can hear me coming from far. The dealers says there is nothing wrong and sure there is no problems with power or acceleration , just sometimes it gets too loud. This morning I decide to unplug the cable on the EGR ...now the sound is gone . My question can I leave the valve unplugged ? Will there be any negative results if i do this ?