TRANSMISSION FLUID TEMPERATURE TO COOL

[Poor White Boy]

I INSTALLED A MISHIMOTO AIR TO FLUID TRANSMISSION COOLER ON MY 2021 F350. I DELETED THE FLUID TO COOLANT BOX BELOW BELLHOUSING. MY TRANSMISSION FUNCTIONS JUST FINE. I AM IN LAND OF SUN, FLORIDA. HOWEVER THE TRANSMISSION FLUID TEMP NOW DOES NOT GET ANY HOTTER THAN 148 DEGREES. THOUGHTS ??
Pardon the caps /was on a mobile phone

 

[The Evil Twin]

Any way to put the valve back on to throttle flow down?

 

[Apples]

HOWEVER THE TRANSMISSION FLUID TEMP NOW DOES NOT GET ANY HOTTER THAN 148 DEGREES

Good thing it's ULV fluid.

/peanut gallery

 

[RedZilla]

No expert here, but normal range is north of 200 I believe. I would love to know how it acts pulling a load, what shift characteristics are like both empty and pulling, and of course if you were in a cold climate region what temperature it would rise to. Good luck with the experiment.

 

[Poor White Boy]

Not sure on a valve . Someone mentioned doing this cooler and having same issue and resolved with a valve but it was hear say. Can not find any info
Yes ULV ford transmission fluid