> What say the drivetrain gurus. Is my test conclusive in anyway? Are you SURE your Coupe's diff lock is working? The Torsen diff should have transmitted *some* of the torque to the rear wheels because its bias ratio's only 3:1 or so... _ _ / l l o l \ l o Jeffrey Goggin /__l l l / l l l l l l / l l * * * * * * * / l l_l \_l l l__/ l_l \_l l AudiDudi@delphi.com