I had a MS3 for about 6 months. Fun little car. I can see what they are saying about being overpowered to an extent. Yeah, if not carefull the torque steer, can really jump out and get ya. Hard shift in a curve, and it will jump quite a bit. But be a little smarter on the corners and will be fine.
And as far as the tuners, back when i had it they were saying the cobb tuner would be out. Sounds like its still not here, from what i read above. Wow.