BD Diesel BRAKE, Variable Vane Exhaust - Ford 2008-2010 6.4L 2001100

Delivers up to 70psi exhaust backpressure; Electronically closes off turbocharger vanes to provide engine braking; Can create up to 130 retarding horsepower; Helps maintain speeds on descents and curves; Better control of your truck and load.; Different modes including automatic downshifting keeping engine rpm and engine retarding force high; Integrated with the cruise control to automatically accelerate and decelerate to maintain vehicle speed; Easily installs by plugging into existing factory ports; In-dash 'Push To Engage' Button