what are you talking about, awd takes more power from the engine to spin all 4 wheels.... Its a fact.STI from a stop. Hard to say on a roll on. Theyre soo close in power. Awd doest really rob power from the motor unless the the tires are breaking loose. Thats what a viscous coupling does. WHile they call it AWD it really isn't so roll on,well how bout you let us know. Ive only raced modded sti's and my cobra has quite a phew So your guess is better than mine.