It won’t be MDS under acceleration.Hmm...I never thought about it but yeah I suppose it could also be the MDS. It's only for about a second or two when you are accelerating moderately hard. I'd say it's at the 4,000 to 5,000 range. Annoying AF. I will bypass the ANC tonight and see if it goes away. If it doesn't, then it may be the MDS.