winston

New Member
Dec 4, 2016
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0
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What fuel economy we can expect for Duramax 6600? I have bought a used Duramax 660. Current the truck is producing 17-21 mpg when driven empty. That is fine. I am not happy with the power. I guess replacing air filter can resolve this issue. My friend suggested me an airfilter (https://www.bcdiesel.ca/en/afe-stage-ii-cold-air-intake-replacement-filter-dry). He says it is a good one that helps the power and will not affect the mileage. How about this model? If you have some idea about this please share the reviews.
 

Cleanoh4

Well-Known Member
Aug 27, 2013
4,346
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NJ
Winnie; can I call you Winnie? Buy any air filter and move on. You will literally see no major difference and if a mpgs are a concern, sell the truck