The timing belt isn't connected to the blower serpentine belt except through pulleys, so I wouldn't think so - and it was at idle when the "sudden stoppage" happened. I think it's either a bad bearing or the rating on the M62 is too high. Magnacharger shows the output graph on their products to 15,000 rpms and I have mine turning 13,200 rpms with the engine at 6,000 rpms. I don't think I've turned the engine past 5,500 rpms, so the blower has seen less than 12,500 rpms max.

The truck drove pretty well today without the blower, but on hard initial acceleration I think I heard detonation - some sort of rattle - could be that the N/A rpms and different vacuum level vertices are outside the tuned areas in the MS ECU.... or the rotors could be fluttering against the rotor case.

Frank