BD Diesel Performance 2001030 Variable Vane Turbocharger Brake

Don't wast your money on this. I installed it on a Duramax LMM and all it does is down shift the transmission. I called tech support and they said it only applies very little braking action and it is impossible to tell if the variable vanes are working without taking it to a mechanic and have them test the back pressure. Then they made all kinds of disclaimers that it is only intended for a lightweight trailer not a heavy trailer. The Duramax Trailer mode works much better than this product. Stay a way for it.

If you want a engine break that works on an LMM, get the banks speed break. It totally works. It cost $1000 but it works great. Watch there video. Banks....