Standalone PacBrake Tuning

With this tuning added into your package, your 48RE automatic transmission truck will be able to run a PacBrake exhaust brake directly off the ECM without an external controller.

  • 2004-2007 Auto Trans Trucks
  • Automatic 4-3 downshift
  • Brake will work down to about 15mph with manual downshift to 2nd
  • Instructions Included for brake/ECM connection and wiring diagram

*This is for ECM control added into your tuning package.  You will need to separately purchase and install a PacBrake with all associated components such as wiring/relays and Air Compressor.

Custom Tuning Packages:


See my tuning in action…

High Altitude 12 Valve Tune Cold Start

An early version of my towing tune…