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HawkEng · 10-29-2009, 08:39 PM

The older non-computerized 5.9L Cummins will get better fuel economy. 98.5 started with the computer. We've had 97 to 06s and the 97 would get better fuel economy. Of course, the 06 sure runs good with a smarty computer upgrade!

10-29-2009, 08:39 PM	#5
HawkEng Junior Member Join Date: Apr 2009 Location: Jackson, Missouri Posts: 29	The older non-computerized 5.9L Cummins will get better fuel economy. 98.5 started with the computer. We've had 97 to 06s and the 97 would get better fuel economy. Of course, the 06 sure runs good with a smarty computer upgrade!