Looking to change the fan set up with my s9's

[oddssodds]

I know this has been brought up before, but I am not happy with the cooling on my s9's.  It's a bit warmer here and two of my units run up to 85c

I am considering building an "exhaust box"  and pulling from that box with this sort of fan:

https://www.amazon.com/dp/B00CAHM75W/ref=psdc_13399911_t3_B009LCEUEK


These fans pull high volume and pressure.

The issue is the PWM feedback to the antminers.  If I disconnect the fans, the units will shut down.  I suppose I could just cut the fins off the fans and let them spin there, but that draws an additional 150watts give or take.

I could try and connect a PWM generator and trick the units.

Does anyone have a hack for disconnecting the fans from these units?  I just can't have them run this hot.  They wont last

[taserz]

85c is fine even 100c is normal

[oddssodds]

really??  I thought people said that these units shut down at 90c

[taserz]

i got 4 running at 90-95 right now chip temp.

Maybe 90 PCB temp