Thread: Help Tuning a 603 IP
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Old 05-20-2017, 06:08 PM
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jake12tech jake12tech is offline
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Join Date: Nov 2011
Location: Philadelphia, PA
Posts: 2,878
Your fuel economy should definitely go up. I'd bet you'll see 30mpg highway 25mpg city.
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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k
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