Exhaust Brake for 05 Dodge

Double tap T/H??

1st tap of button tuns T/H Mode ON

Push button again.....turns T/H OFF and OD off (no 4th gear)

Push button again..back to normal (default mode)....OD On (1, 2, 3, 4)


Exhaust Brakes......great tool for descending down grades especially when using T/H Mode

I have been running a simple Exhaust Brake System since 2008 on my 2007 5.9 CTD/48RE tranny

Electric Solenoid closes 4" butterfly creating back pressure (2" bypass butterfly controls back pressure).......turn it off and large springs open the 4" butterfly allowing full exhaust flow.

Simple..no air compressor/vacuum pump required
US Gear Decelerator.
(some reports of issues with bushing galling but in 10 yrs have not had any problems.....and I use it a LOT)

eHoefler wrote:
The 48re does stay locked up while deaccellerating, but there is no reverse thrust bearing for the lock , which means it only has a bushing, that is what can not handle the added load from an exhaust brake. A tranny build will need to be done to make it survive.

That's kind of a funny thing. Dodge came up with that scenario about wearing the thrust washer but people that had been using EB's for years on their Dodge tranny's never had any problem like that.

I'm familiar with the accelerated wear/life testing techniques some manufacturers use and sometimes they yield inaccurate results.
I suspect this was a case like that.

The 48re does stay locked up while deaccellerating, but there is no reverse thrust bearing for the lock , which means it only has a bushing, that is what can not handle the added load from an exhaust brake. A tranny build will need to be done to make it survive.

i would think that your torque converter would stay locked up under deceleration.

Apples and oranges but my ole 99 Ford did.

Anyway, i think an exhaust brake would be a nice addition. However i have never hand one and also the 18 wheeler that i drove cross country did not have one and i am still here to tell you about it.

I have also noticed what Boogie reports in 4th with my 2005, and my 98.5 did it also. The double tap is new to me for 3rd, I'll try it on the way north today. Thanks for sharing.
Banks makes an engine brake kit for 2005 Ram/Cummins with AT if you want to go further with it. I have the kit but haven't gotten around to installing it yet.

Does your torque converter not stay locked during decel with T/H engaged? Mine does; I'm not the original owner but cannot find any trans control module, and do not have an exhaust brake.

Double tap the T/H button (turn off then back on) to force a downshift from 4th to 3rd. Trans will stay in 3rd locked as long as you don't touch the throttle.

Mine maintains 4th lockup coasting down to 40mph, and 3rd lockup down to 25. Manually select 2nd and you get 2nd lockup as long as your speed is above 25.

That is how my truck acts, I'd like to know if yours does the same. I thought about adding an EB (Pac Brake PRXB) but honestly don't need it for my size trailer.

EB is not for stopping anything, it's to supplement the service brakes, especially descending hills. With it you don't have to keep applying the brakes or risk getting them hot.
You need as total package; a system that controls your converter lockup during EB use.
Totally worth it IMO.

Someone will likely tell you your trans is not EB capable. That is somewhat true in that Dodge made improvements in 2006 for EB use but with the right components, your truck can easily use this wonderful addition.

Tow haul and/or exhuast brake to stop a 5er? I am familiar with using tow haul and/or an exhaust brake while driving to slow a vehicle on downhills but not stopping one.