Cummins
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Description
When the 6.7L Cummins was introduced, it brought several upgrades to the platform, including a variable-geometry turbocharger (VGT). One of the standout features of the VGT is its built-in exhaust brake, which uses an adjustable internal nozzle to create backpressure and help slow the vehicle. For many drivers who had never used an exhaust brake, it was a major improvement in control, especially when towing. However, for those familiar with traditional aftermarket exhaust brakes, the factory VGT system often felt somewhat limited in overall braking strength.
For a long time, increasing braking performance meant moving away from the factory setup entirely, typically by swapping to a non-VGT turbo and adding a conventional inline exhaust brake. That changed with the introduction of PacBrake’s LoadLeash system. Designed to work alongside the factory VGT, the LoadLeash acts as a supplemental engine brake, significantly increasing retarding power without requiring a turbo swap. It’s an ideal solution for those looking to keep the factory turbo while improving downhill control. For those planning to upgrade their turbo for performance or durability, traditional inline exhaust brakes remain a strong option, offering maximum braking capability alongside increased power.