GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

6.0 MPG after Tuning

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Old 11-07-2012 | 05:09 PM
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Default 6.0 MPG after Tuning

Hey all,

I am looking to improve the MPG's on my 2007 6.0 2500HD, after coming from a diesel I am kind of regretting getting this truck. Right now I am getting 11-12 in the city and about 15-16 Hwy.

I was wondering what you all are getting for mileage out of these trucks, before and after you had them tuned and with what tuner.
Old 11-08-2012 | 09:23 AM
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When I was looking into getting a tune on my truck, Justin at Black Bear told me that the tune itself won't effect mileage. He said, "your foot will determine that." It's turned out to be true for me.
Old 11-08-2012 | 10:08 AM
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That makes sense, my foot is very light on the throttle. What kind of increase did you see on your 6.2?
Old 11-08-2012 | 10:16 AM
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No mileage increase but it carved about .8 off my quarter mile et. The big difference is in drive-ability and feel, which some of the guys on here tell me is mostly in the trans tuning. I don't have any other engine mods for a tune to take advantage of.
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