what percentage of fuel economy should I expect to see for the better?
Originally posted 2008-12-21 22:43:34.
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how much better will my duramax diesel fuel economy be with a superchip addon?
what percentage of fuel economy should I expect to see for the better?
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your duramax from the factory got around 22 mpg.When the mileage gets to 12-15,000, consider that your computers built-in break-in period and your fuel mileage will drop to around 13 and suppose to give you more power. I have only heard complaints of poor fuel mileage,but no one will complain about getting more power.But rule is,more power-more fuel.So when you want a power chip,think,less fuel mileage.
You should get better mileage with a chip. I have a few friends that have a chip in their duramax and their mileage got better by adding it about 2-5 mpg’s But the more you use your right foot the mileage will go down. I have seen these trucks only 13-18 mpg’s driving normal. The newer ones in the new body I hear are getting worse mileage due to the diesel particulate filter.