[svtscottie]

Just trying to see if what I'm experiencing is a normal sound. When letting off the throttle after a hard pull the exhaust makes a sound that is like some making a fake fart sound or blowing raspberries. Is this just normal wastegate noise? I've watched some videos of other x4s and seem to hear the sound but seems extra loud on mine. Car runs perfect and does not make any weird noises at other times just the loud fart sound when releasing the throttle after a high rpm pull.