Gas mpg?

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pm80

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So has anyone who removed there cross bars off the roof rack or lowered there car noticed better mpg?
 

rogersinsel

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So has anyone who removed there cross bars off the roof rack or lowered there car noticed better mpg?

You could look at the XFE model and the Hybrid model and take your queues from there. The roof rack delete will help. Lowering will also. Changing to a low rolling resistance tire, 17 inch, would also. Even with all that you'd likely only see alsight increase out on the highway.

---------- Post added at 10:48 AM ---------- Previous post was at 10:47 AM ----------

So has anyone who removed there cross bars off the roof rack or lowered there car noticed better mpg?

What year model do you have? What mpg are you looking to attain?
 
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pm80

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I have a 2007 and I get about 15-16 and that is not stop and go traffic. I don't have a light foot either, but even going easy I still have not seen improvement. I was thinking about getting a BB tune, but was still undecided.
 

BC Lightning

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I see 20-22mpg on the highway, but I spent a ton of R&D tuning my Tahoe myself, I bumped up the % for the V4 mode so I can use cruise control and basically lock in the speed so it stays in V4 mode, it cuts itself off after 10min and returns to V8. I also have 22" wheels, and usually set my cruise around 75mph. I also tuned it for 93 octane. I don't have aftermarket exhaust, Intake or anything else, just a custom tune
 

phileaglesfan

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I know I did it on my Envoy and it seemed to help. Since the Yukon is taller I haven't noticed them but I might give it a try. I'm really happy with the gas mileage I've been getting with my Yukon XL Denali AWD. It is within a MPG of my Envoy Denali 4WD. It is nice driving 450 miles and still have 6 gallons of gas left in the tank.
 

09Hoe

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Hi first time posting but been lurking around the forum for a while. But is it normal if i get only 12-13 mpg? I have a 09 LS model
 

LTZboy

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BC how hard is it to change the V4 mode percentage?
 

BC Lightning

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BC how hard is it to change the V4 mode percentage?

I have HP tuners and to me it wasn't that hard. I would bump up the % a little, then calculate the MPG. I was also data logging at the same time.
 
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