2015 cm2350 tuning??

[Icon900]

(12-06-2019 )Rawze Wrote:  

(12-06-2019 )Icon900 Wrote:  Hey rawze, yeah iv had the overhead ran and set a couple months ago and fuel pump rebuilt at same time. I have not done a injector leak down test But will look into doing so. The truck has 380,000 miles and has 3:36 rears I know a horrible ratio I drive in 17th gear at 60 to 65 and keep my boost under 20 at all times. I pull a tank on a dedicated semi local route. Just looking for some more mpg out of it.

I would not expect much more than 5 or 6 out of it, it geared like that and those speeds.

So you don’t think some kind of ecm tuning would be beneficial to me? I’m averaging 5 right now.