Re: performance chip for 95 International?
you are complaining about 12 miles per gallon? That is 50% better fuel economy than many skoolies get.
I would be extremely happy on any of my cross country skoolie trips if i had gotten 10 mpg!
12 is pretty awesome, nearly unobtainable in a full size bus.
The best way to improve mileage of any vehicle is to adjust the nut behind the wheel!
I agree with the previous poster, want to get metter mileage? drive slower! also, reduce your unnessary idle time, and make sure your tires are properly inflated, especially your steer tires. (slightly underinflated rear tires probably have little effect on mpg in a skoolie.) Drafting behind big trucks at a safe distance can also increase mpg.
If not already using it, synthetic motor oil may make a small difference.
Intake and exhaust mod's will likely make zero difference in MPG.
slightly off topic, but on modern fuel injected gasoline automobiles, tests have shown that the best mpg is achieved using a very dirty stock air filter. Less air = less fuel. While the fuel/air ratio does not apply to a diesel, having the engien breath more air will likely not help with MPG.
Quis custodiet ipsos custodes (who will watch the watchmen?)