Exup and exhaust cam timing

When I am next near Myrtleford, I will go and visit the dyno guy. However I won't have any great expectations. I've seen too many of the guys who are involved in motorcycles in Victoria. Most of them are dangerous bullshit artists whose main interest is in your hip pocket. In the end what I need is a before and after - cause and effect. So it probably involves a lot of road trips.