I am interested in installing an exhaust brake and have pretty much settled on the Smartbrake. I have a buddy that currently uses the Smartbrake on his Dodge Ram and he loves it. He said there is no comparison to the other exhaust brakes. I know that an air compressor and tank are required, which adds to the cost. Before I purchase a Smartbrake, I wanted to know if anyone else has the Smartbrake or have even heard of it. It sounds good but you never know.