Have a 2007 with 5.9L CTD and 48RE auto.....tow a 14K 5th wheel
Installed a Decelerator Exhaust Brake in 2008.
Simple electric activated EB
Push button on dash to turn on/off
Small circuit board installed under dash
DC goes to a constant duty solenoid then to solenoid on the 4" butterfly that closes off exhaust
Smaller 2" bypass butterfly controls/regulates exhaust pressure backpressure (59# MAX)
Push on accelerator pedal and DC is removed from solenoids and large spring opens the 4" butterfly
EB does an exercise operation (close/open) when you turn key on.....checks operation and helps keep butterfly from building up any soot
Some reports of butterffly shaft bushing galling up but in 10 yrs haven't experienced any issues.
Simple and WORKS
Descending 6% grade.......in Tow/Haul Mode with EB ON truck/trailer holds 50 mph
(Combo weight truck roughly 22,000#)
US Gear Exhaust Brake
