Much has been made since the Evo's release about how it dyno's less than a car with 271 hp should, even considering the losses incurred by awd and a transverse powertrain, particularly when compared to the STi, which has a clutch type center diff. After driving my 1/8 scale radio controlled car around, which employs a mini VCU to send power to the front from the transmission, the VCU gets extremely hot. Undoubtedly in my small car some energy is being converted to heat due to friction within the VCU itself. My question is, on a full scale drivetrain, is it not unreasonable to assume that we see some power loss with a VCU as opposed to an active multiplate clutch-type diff? What kind of locking force can the VCU maintain? Once the VCU locks, what kind of loss, if any, are we seeing between the input and output of the VCU?