Well I just installed the tuner from Ag Diesel I will give unbiased updates as I progress. My first thoughts on the install is that the pressure sensor is a pain in the AS@ it took me 45 minutes to unplug and plug the new leads in. Instructions were very clear there is just no room to get in to that tight spot!
The system defaults to the 60HP gain so I will leave it there for now. It comes with a rotary dial to adjust from 0-20-40-60 settings and it seems solidly built
I will keep you updated on MPG and seat of the pants feel, and if there is any less lag, I doubt that a tuner will help with that but there is always hope!
Ok just got home which is a 20 mile trip so cant be definitive on anything but initially I am seeing a good increase in MPG I am attaching rather long video showing the MPG. I drive this stretch every day to and from work and best MPG prior to this is 19.5 so I am hopeful this holds but with regarded optimism. For those who do not want to watch I ended at 21.8 this is at 73 MPH highway with a few decent hills which you can see in the video when the MPG drops.