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The variable vane turbocharger design used in the 2006-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.
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.
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.
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Will the BD Variable Vane Exhaust Brake GMC Duramax 2006-10 work with the Edge tuner??
From what we have seen, and information from BD, any tuner that requires a permanent connection to the ECM is susceptible to issues because the VVT Brake also requires a constant connection via the OBDII port. For tuners that merely download to the ECM and do not require the unit to be plugged in at all times, such as the Edge EvoHT, there have been no issues. But for tuners such as an Edge Evolution CTS, it is not recommended to use with the brake.
So would this product work with EFI Live given the DSP5 switch has to be hooked up to the OBD2 constantly??
The DSP5 gets hooked up in the ECM connector right at the ECM in pins that are not normally used. Would not interfere with another item plugged into the OBD2 port. However the EFI live tuner is custom tuned fairly precisely using a aftermarket setup like that could cause an issue between the two. The tunes are trying to do one thing and the controller trying to do another. Shoot us a call sometime and we can go over some options.