I have two trucks. a 2005 with a 5.3 and a 2004 with a 6.0. I am looking for someone who has a dyno tune they could send me. I don't have access to a dyno and could not tell if I were making a difference. Did anyone have any real gains with a dyno tune?

Let me know. Thanks.

My email is scotmich@wi.rr.com