E60 M5 2006 belong to member "Rab Dog".
The mods are RPi Headers, GT section1/2/3, pulley, oil cooler, scoop, block-off plate, BMC filter, and RPI/Powerchip stage II tune. For reference, stock M5 with CF removed dyno'd on the same dyno around 380-390rwhp.
Congrats, Rab Dog. Time to get back to states....your beast is waiting:hihi: