I tested out and confirmed today what Yal^ said earlier. If you get lockable hubs and install them(seriously takes under 15 minutes) and unlock them it goes away completely. The only thing is you lose a lot of power up front. The TOD is still trying in vain to shift your power split, but is obviously now just spinning your CV's and not your wheels which translates to power being robbed from the rear. I was happy the sound went away for me, but hated driving this way, so the sound stays.The lockable hubs are about $50-60 usually on ebay. You can also buy new ones for around $100, depending on what you get. i think the consensus is that the AISINs are indestructible but very pricey new(rebuilt not bad) and the WARNS are a close second. There are also some other brands out there that will do the job, but I can't make any claims for them.