1) Jack up rear of car, remove wheels, remove both fender liners
2) Tape up the leading edge of the engine covers
3) Remove bolts for engine side covers (coupe) pull coolant tank forward and remove side covers
4) Remove allens for air brake unclip electrical connector and remove
5) Remove 4 bolts for armadillo (2 on each side) cover and remove
6) Disconnect o2 sensors from the wheel well (two on each side). Label each one and then remove from downpipe
7) Remove ball/socket exhaust clamp and brackets from exhaust and remove
8) Remove heat shield from downpipes. Upper from the top and lower from the wheel well
9) Remove v-band clamp from downpipe to turbos. Carefully rotate downpipe out of the car from the top. Make sure not to damage gasket
10) Reinstall in reverse order.
AWE Guide:
http://www.awe-tuning.com/media/pdf/installation_instructions_mclaren_mp412c_cats_exhaust.pdf
Note about reinstall of v-band orientation:
