Damn, I cant find the site, but I found a totally badass website by accident of actual trials of testing electrically assisted turbos and different designs for diesel engines. I'll edit this post if I find it. Anyways it worked really well, but it was a HUGE electric demand; we're talking starter motor for a sub 2.0 engine big demand. It worked quite well, though it was expensive and they ended up putting permanent magnets on the blades of the wheel itself (which is what I imagined all along), so I can only imagine what that mustve done for balance.