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Old 12-27-2012, 03:29 PM   #159
arjay219
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Join Date: May 2012
Fan#: 98685
Location: Columbia, MO
What I Drive: 2010 Black SES

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I've got a Trubendz kit on mine and I've noticed an average increase of 2-3 mpgs both around town and the highway. I've achieved 40 mpg a couple times on trips with varying speeds from 60-75. I replaced my 2nd cat with a high flow one. Not sure if this helps at all. May remove it if possible
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