Quote:
Originally Posted by Tortfeasor 335xi
STI has an adjustable center differential. You can use it to set up the torque split. Of course, it does not ever go full RWD or full FWD, its closer to 35% front and 65% rear.
This article discusses it further:
http://www.driveperformance.subaru.c.../blueprint.asp
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He's right. The DCCD module (driver controlled center differential) allowed max 65% to the rear and you.can permanently lock in that ratio which allows those endless donuts.