2007/335i/coupe-- Glad you like it. It was a pleasure meeting you
As for the fans, they are there to provide cooling to the intercooler and radiator. It's a lot less air than what the car would see on the road but it does serve the purpose as long as you allow for adequate cooldown times between runs. It is not to "force feed" the intake or turbos
Sflgator's dyno gains aren't directly comparable the car here because it was tested on a Mustang load bearing dyno, not an intertial style Dynojet. This is a much bigger factor than the difference in octane as each dyno uses a different methodology to measure torque/horsepower. This is why it is only valid to compare dyno results taken from the same dyno. All in all, I suspect sflgator's car to put down 5-10 more whp and 10-15lbft of torque more due to the higher octane fuel (93 vs. 91). Just a guess though...
Cheers,
shiv
PS. The wavey lines in the tuned run was caused by the car oscillating back and forth quickly during the dyno pull. That has more to do with how tightly and straigh the car was strapped down than anything else. This oscillation does not exist on the road whatsoever