Do it!!! You can then play with the Motec i2 Pro software (or whatever version they are up to now).

GoPro needs to be on LOW sound setting. When you edit the footage, turn down the sound bar to lowest setting.

__________________
MY09 Evo X - 1.6bar@3500rpm - got lag?
Barbagallo - 56.03 (S); 1:08.09 (L)
Collie - 50.77
Possibly the most under-driven Evo X in the world??