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Author Topic: what have you done to improve your MPG?  (Read 30096 times)
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Trey
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« Reply #50 on: 01/18/11 05:46 AM »

Leave the wife at home.
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2004 Silver Birch AV 4x4, Leather, CD-Changer, DVD, chrome steps
MODS: TRUXXX Leveling Kit, HIDs, Full-Time Amber DRLs, All-8-on-Hi-Beams Mod, A/C Vent LEDs, Metalcast Engine cover, Headlight and Backup Light Strobes, Sail Panel LEDs, 81-LED Lighted Bowtie, Color-changing LED Headlight Accents, Black Flames, 20" Dub X-Wang Wheels, Power Locking Tailgate, Train Horns, Line of Fire, Smoked Taillights.
avalonandl
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« Reply #51 on: 01/21/11 10:02 AM »

OK I'm confused how does the tow haul mode give you better mileage or what is the theory behind it I thought that you would get worse due to it controlling the transmission to help give you more power while pulling stuff. Huh I don't know I guess I don't know how the tow haul mode works exactly I guess that would be a better question. Also does it matter what axle you have I got the GU6 on my Z71 and right now I'm getting about 13.5 on highway and city but it has been steadily increasing hopefully an AEM will help out the same with my last truck.  both with power and MPG.
tow haul keeps the transmission in a lower gear longer for more power and the transmission will not "hunt" between gears as much. It does NOT increase HP.

Avalon
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Wazbro
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« Reply #52 on: 01/21/11 06:13 PM »

OK I'm confused how does the tow haul mode give you better mileage or what is the theory behind it I thought that you would get worse due to it controlling the transmission to help give you more power while pulling stuff. Huh I don't know I guess I don't know how the tow haul mode works exactly I guess that would be a better question. Also does it matter what axle you have I got the GU6 on my Z71 and right now I'm getting about 13.5 on highway and city but it has been steadily increasing hopefully an AEM will help out the same with my last truck.  both with power and MPG.

The part about tow/haul helping mileage was only for 07+ with Active Fuel Management, the idea is that it helps the AV stay in 4cyl mode more. Without AFM tow/haul will hurt mileage when not towing.
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zo6man1
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« Reply #53 on: 01/21/11 10:24 PM »

ok cool makes sense thats what I figured that it would have done. 
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« Reply #54 on: 01/22/11 01:43 AM »

Love the truck, power,    O MPGs the wife drives.
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mtnman4x4
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« Reply #55 on: 05/11/11 01:04 AM »

Check around at the dyno shops. They usually know a guy who wil custom tune your computer. I got it done for $75. Took an hr and a half. And he reprogrammed almost everything. Fuel/air mixture, Trans shifts and pressure, timing, ect.... Truck doesn't bog when i first get on it and have more power and better fuel mileage. 10x better than my hypertech.
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Regency conversion custom 2003 Avalanche Z71. This truck is loaded with every option, all power, full leather, Z71 off road package, 315-75-R16 Toyo open country tires, 6 inch suspension lift, custom front bumper with built in winch, billet grill, fender flares,
Trey
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« Reply #56 on: 05/11/11 10:38 AM »

Check around at the dyno shops. They usually know a guy who wil custom tune your computer. I got it done for $75. Took an hr and a half. And he reprogrammed almost everything. Fuel/air mixture, Trans shifts and pressure, timing, ect.... Truck doesn't bog when i first get on it and have more power and better fuel mileage. 10x better than my hypertech.
Wouldn't such a guy have to have a programmer that will then get locked to your truck?  Or do they have some sort of trick to tune your truck and then turn around and tune another truck with the same equipment?
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2004 Silver Birch AV 4x4, Leather, CD-Changer, DVD, chrome steps
MODS: TRUXXX Leveling Kit, HIDs, Full-Time Amber DRLs, All-8-on-Hi-Beams Mod, A/C Vent LEDs, Metalcast Engine cover, Headlight and Backup Light Strobes, Sail Panel LEDs, 81-LED Lighted Bowtie, Color-changing LED Headlight Accents, Black Flames, 20" Dub X-Wang Wheels, Power Locking Tailgate, Train Horns, Line of Fire, Smoked Taillights.
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« Reply #57 on: 09/28/11 05:05 PM »

He has a laptop program that he plugs into your computer and downloads a new program to the truck. I still love it. Plus I got my money back selling the hypertech on Craigslist
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Regency conversion custom 2003 Avalanche Z71. This truck is loaded with every option, all power, full leather, Z71 off road package, 315-75-R16 Toyo open country tires, 6 inch suspension lift, custom front bumper with built in winch, billet grill, fender flares,
Ovis Canis
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« Reply #58 on: 08/29/12 06:28 AM »

Any body know someone in the Fort Worth area that they trust to do a custom right?  Sounds like this is the way to go. One time cost for the rest of its life.
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kheath39
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« Reply #59 on: 10/10/12 09:22 PM »

stopped driving it
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arharris
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« Reply #60 on: 11/30/12 12:24 AM »

All my vehicles use AMS Oil , I get 22 highway with my Avalanche
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