Noisy if runs at 100% all the time. Had an S&B on previous rig and got annoyingThe s and b rep I talked to said possibly it will be available to order direct through them as well. Not 100 percent on that. Waiting to see. The other thing he was able to say he was pretty sure about it’s a variable speed fan so when the engine is revved up the fan speed is faster and when the engine is at say an idle it’s quite a bit slower. Not sure how that’s going to work with if your coasting and let off the throttle if the fan speed lowers or not. The other thing is if it ever fails apparently it will default to 100 percent duty cycle. So why not just leave it 100 and run all the time is back there anyway. But I like that it’s out of the way now.