http://www.autoblog.com/2008/12/01/m...g-with-405-hp/
According to the article linked above the Mitsubishi, "twin-clutch SST gearbox – can't handle more than 331 lb.-ft. of torque". On the TTP Engineering's dyno they found that approximately 270 lb.-ft. of torque was the limit before the torque protection kicked in. Eric Jones from AMS added that the, "torque number dynos spit out is an estimated crank torque number, not wheel, because horsepower is measured at the wheels. The torque is an estimated number that the engine produces before drivetrain loss based on the horsepower reading and rpms". So that begs the question, what is the real world limit for these transmissions?
According to Getrag it's approximately 350 lb.-ft. of torque. Can the torque protection be overcome through modifications to the programming of the TC-SST processor? Time and more testing will tell.