Meat_ said:'98 Daully/auto/Cummins The absolute best I've seen is 17.5, I pretty much get 15 no matter what I'm doing (I have a lead foot)
The thing you have to remember is to keep it under 2,000rpm when driving (short times over are ok). Anything over 2k and they drink fuel.
Exactly, I would get better mileage if I couldn't hear that damned thingSupergper said:...(I loved to hear the turbo wind up :greg: )