I assume that by changing the ECM software they would change the fuel curve (similar to what a performance chip does). I have never heard of this being a common practice, but if it does then yes the 6088 would essentially equal a 7088. A 6088 is identical to 7088 component wise except for 8.3 instead of the 8.9/9.0.
well with todays programmer and computer interface technology you could pretty much get whatever horespower you wanted out of the 8.3. I would think at least class 7 horsepower would be achievable. From what I know the 9.0 is just a bored and stroked 8.3 so as long as warranty was out of the figuring and you would be willing to watch egts I say go for it. On the egt note has anyone toyed with water methanol injection like we do with diesel pickup tuning?
Before common rail...i believe...the first 2588 was the last of the mechanical pump or maybe the last 2388... its kinda running togeather or my memmory is getting worse....its been common rail sense. not the caps fuel system
I believe they switched to common rail on combines in 2006. Therefore, a 2005 model 2388 would be mechanical and the 2006 model 2388 (as well as 2588, 6088, etc.) would be common rail. I do not believe they ever put the caps system in a combine.