is there any way to disable the kick down from overdrive to 3rd or passing gear when the truck is floored . My problem is my NOS will not function unless at wot on the expressway when I floor it it downshifts and unless i let off the gas the rpms are way to high, it wont go into overdrive unless i let off the gas Please Help

 

without custom tuning, the truck will never shift into 4th at WOT.