Canfield Industries boost controlled exhaust dump (click picture to enlarge)

The valve is controlled by boost signal using a Garrett wastegate actuator. 

The assembly comes with everything you see in the picture; CNC machined, mild steel valve body with high temp bushings for the butterfly shaft, 3" SS V-band clamp, 3" weld on V-band end, and actuator.  The kit will also come without the actuator if you have your own.

 

Install pictures

I drilled a hole in the valve body and installed a small roll pin to keep everything in place when installed.  I am using 3" stainless Y pipe from Jegs that connects to my main exhaust.

 

 

View from side of truck

 

The valve assembly is hardly noticeable from the side of the truck.  It is perfectly quiet thanks to the precision CNC machining on the butterfly valve.  I hooked up the valve to a source on the intake manifold.