Found this on Audizine, hope it helps:
Replacing Starter DIY
remove headlights and bumper, disconnect battery
remove all rad support bolts and just slide it forward (dont disconnect coolant)
17mm on tensioner to get the accy belt off
8mm allen and 13mm bolts to get the alternator off ... once its loose undo the plug and 13mm on the back of the alternator
pry/tap the alternator out of the way and take it out ...
undo the connector and 13mm on the starter (use a deep socket 13mm), undo the AC line holder (13mm nut), intercooler hardpipe (2 - 5mm allen) and IC hose, and also the turbo outlet coupler (i take if off all as 1 big piece)
now undo the 16mm bolts holding the starter in ... u have to go in from the back of the subframe ... the bottom bolt has a 16mm nut on the front side that you can hold with a long extension on a rachet ...
once the bolts are off, you can just barely finagle the starter out ...
reinstallation is reverse of removal :-)