I'll just be frank - all of my diesel tuning experience is with much older mechanical adjustments - retarding the pump by loosening some bolts, spinning it by hand and then adjusting some valves - that's about it... Now with that being said, I've been experimenting with my babymax to try and get better fuel economy and fewer regens... I drive right at 180 miles round trip every day so you can see why I'm after this First thing I tried was just killing some tq limits and playing with the dm table a little - got to 28mpg (it was originally 25ish) and regenning every 200 miles... Next thing I did was I tried increasing the vane position 5% - this was like you were driving with the exhaust brake on, so I went the opposite way - opened the turbo up 6% and on top of that retarded the injection timing about 5 degrees... This was both good and bad - regenning went to a 320 mile interval and fuel mileage went to about 29.5 to 30, but the truck is very lazy down low and you have to stay in the throttle especially when you hit any grades - which does put heat into the exhaust and keep the soot burnt off, but wanted to try something else...
On the current tune I'm fixing to try out I'm trying advanced injection timing with a 5% increase in fueling combined with stock turbo settings - hoping that by getting overall power up that I can get fuel economy up some more...
Am I doing anything right? What's recommending for this type of end goal?
I'm after 32or better mpg on the particular stretch of highway I drive...
Attaching the current test tune and the one where I was getting my best results so far...