35 degree drop in temp(and then some) guaranteed.
I needed it too.
A couple times I was hittin' real close to 300 and that was w/a stage 1 PC-V too.
That alone was a little spooky.
The dyno tune will bring it down some as well.
If anyone has a fan cooled or knows the specs on one, I'd like to see the cfm stationary, and the cfm while cruising posted. I just got a feeling the fan's gonna hinder air flow at cruising speed.
fan doesn't hinder natural air flow at cruising speed, it improves it. The heat exchanger is shrouded by the tire, fender, and forks, its not like it is out in direct air like holding it out the car window. I've seen improved cooling performanc with the fan even at interstate speeds.