With
the change in technology as the newer truck models rolled out of the
plant, we at BD have changed as well to apply our over 20-years of
braking technology to match. With the newer Chevy Duramax engines,
the change was already there, we just had to utilize it for your engine
retarding needs.
The same Garrett variable
vane turbo design is used in the 2004.5-up Duramax engine to reduce
turbo lag and increase power can also help slow you down. BD utilizes
the variable technology built into the turbo by closing off the
vanes while retarding creating up to 35psi of back pressure. What
does this give you? Ample retarding horsepower to help maintain
your speeds on descents and curves giving you better control of
your truck and load.
How do you use it? While
in Tow/Haul mode, switch BD’s Variable Vane Brake (VVB) on
and every time you let off the throttle it will close the variable
vanes in the turbo which develops exhaust back pressure in the engines
combustion chamber, creating resistance against the piston from
reaching top dead center.
Use
the OEM turbocharger's exhaust turbine vanes to develope exhaust
back pressure/retarding HP and safely maneuver through the hilly
terrain.
The variable vane turbocharger design used in the 2004.5-up
Duramax engines to reduce turbo lag and increase power can also
help slow you down. BD utilizes this technology to electronically
close off the vanes which can create up to 130 retarding horsepower.
This braking force will help to maintain your speeds on descents
and curves, giving you better control of your truck and load.
Dial-in the retarding power by
controlling the exhaust turbine vanes.
While in Tow/Haul mode,
switch BD’s Variable Vane Brake (VVB) on and every time you
let off the throttle, it will close the variable vanes in the turbo,
developing exhaust back pressure in the engine’s combustion
chamber which creates resistance against the piston from reaching
top dead center.
The
VVB rotary switch offers three different modes included automatic
moderate and aggressive downshifting programs for the Allison transmission
to give better weight control. Exhaust braking also works in Allison
manual shift selections. The VVB integrates with the cruise control
to automatically accelerate and decelerate to maintain vehicle speed.
A
great value for an quick-to-install exhaust brake. An easy job
for a handy man!
Easily and simply installs by plugging into existing factory
ports and by mounting the rotary switch on your dash. All of
these features in one package which with some competitors would
require two separate ones at nearly twice the price and twice
as long to install. Now that is value added engine retarding
at it’s engineered finest.
Is it hard on your truck? Not at all… We have
designed our brake to not make harsh downshifts into lower gears that
can cause tire “chirp” and drive train strain. The Variable
Vane Exhaust Brake is also firmware updateable via the internet using
your computer's USB connection and is the perfect fit for your Duramax
towing needs.
