he600wg turbo for cm870

[Konstantin]

Hello, I also read couple of articles about cars which claim that wastegate turbo is better for mpg. I have an old truck with cm870 and thinking of experimenting with turbo setup. Yes, I am aware of engine brakes , where I drive I don't really use them often. HE600wg is what I was thinking about. What are your thoughts? Will mpg suffer or stay same or be terrible. Right now I get around 6.6 mpg driving 65mph.