I have the Banks Exhaust break. So far i like it. I have not had a chance to use it in the mountains with the trailer yet. I have used it in the mountains without the trailer and i have no complaints. I have been able to go down mountain grades without hitting the break pedal at all. I have seen some lower EGT from normal driving with it. maybe about 100* over before it was installed. Im guessing cause i took the stack EBPV out and the banks butterfly is further down in the exhaust flow then the stock butterfly. From what i have read you have to get a torque converter lock up (banks smart lock) or else you will just raise trans temp cause the converter is not locked up while the break is engaged. I have heard if you use a break while the converter is not locked up it will cause trans temp to rise.