Went to Nashville to meet with Justin of Black Bear tuning. He sure knows his "stuff". I was impressed with and happy with the tune he put into my 2011 Silverado 6.4l today. I recommend him to anyone.

 

so, explain a bit more. how much of a difference did you see? what type of tuning did he do?

 

He spent time asking questions about the truck, like what modes already done and what is planned for the future. He wanted to know fuel used or willing to use. He plugged his interface in and into his computer and started resetting shift points and timing. We then take the truck out for testing (playing). So much fun getting on it on the highway and then on side streets while he retunes until he and customer is satisfied. His guestimate is about 30-40 hp and much better shifts.
I am very happy with what I felt (seat of the pants dyno) on the 3-hour trip home.

 

I have heard many good thing about Black Bear.