Make the Most of Your Power Stroke’s exhaust
backpressure valve! BD’s BrakeLoc connects to the EBPV control wire, turning
the factory valve into an electronically-controlled exhaust brake. Includes
the BD AutoLoc to maintain lock-up when the exhaust brake is activated
ensuring that 100% of the retarding force is being transferred in 3rd and 4th
gears. Note that, because the EBPV is activated hydraulically, there is
typically a 2-3 second delay between the time the valve is actuated and
engine retarding occurs. While the BrakeLoc is an economical alternative to
an exhaust brake, it is NOT intended as a substitute. For quicker, more
effective braking, we recommend a BD exhaust brake system, which utilizes our
Variable Orifice Technology, and won’t stick like the stock EPB valve can.

Cost effective solution of engine retarding for towing with the automatic
transmission on the Ford PowerStrokes
Commands the Exhaust Back Pressure (EBP) valve to activate as well as
keeping the lock-up clutch of the torque converter to stay engaged to allow
up to 100% of the retarding force to be transferred while in 3rd and 4th
gear
Transmission oil temperatures will remain low because of little or no
slippage occurring in the converter in these gears
For more efficient retarding use or medium to heavy loads use BD Exhaust
Brake 2033143, 2023144, 1037143 or 1027144