Better Fuel Mileage

[WilliamsVMAX]

I usually get about 17.5L/100km on cruise going 130km/hr on the highway, and I cannot get any better than that. City driving is even worse at about 18.5L/100km. So a few days ago I had a new Truxedo cover installed, and I bought a Superchips Flashpaq Programmer. I programmed the truck to the performance tune and I find it pretty good. Nice firm shifts and definitely a difference in power once you start moving. Also even less dropping back on hills. So I came out to a job today, it was about a 600km drive. I set cruise at 130km/hr as always and to my surprise my fuel mileage has gotten alot better. I now averaged 16.5L/100km. So I am guessing both the cover and programmer both had alittle to do with it. Thats just as good as what I was getting in my 5.3L. I am hoping with an intake and exhaust it will even get better!!

[HawkeyeOC]

It doesn't surprise me at all that mileage was better. I have a full 150 lb+ fiberglass shell on mine and I saw a slight improvement in highway mileage. Tonneau covers did the same thing on my last truck.

 

They help!

[ws6_guy]

Thats awesome congrats

[ChrisNJ]

Not to be a jerk, just curious. But assuming you bought these two items just for mpg gains? What's the payback time? If you bought the cover just for needing a cover, then mpg gains are just a bonus, and could in affect pay for the cover, in time.

[strafingmoose]

I hear ya. Lost my tonneau cover on the highway since then, lost maybe 1-2L/100km... damnit.

[WilliamsVMAX]

Not to be a jerk, just curious. But assuming you bought these two items just for mpg gains? What's the payback time? If you bought the cover just for needing a cover, then mpg gains are just a bonus, and could in affect pay for the cover, in time.

 

 

Well its like this. I bought the cover because I needed a cover, just sick of all the snow getting in the back. As for the SC Flashpaq I obviously bought it for the power increase. And to be honest I am not worried about fuel mileage, I drive a 6.0L with a 4.10 rearend. On average I am at the pump every 4 days when I am home. When I am on the road working I am probably at the pump 2-3 times in a single day. If I was worried I would of bought a car. I put between 60-70,000k on my truck a year so getting better fuel mileage is a bonus and it will definitely pay for itself.

[5.3Avalanche]

I usually get about 17.5L/100km on cruise going 130km/hr on the highway, and I cannot get any better than that. City driving is even worse at about 18.5L/100km. So a few days ago I had a new Truxedo cover installed, and I bought a Superchips Flashpaq Programmer. I programmed the truck to the performance tune and I find it pretty good. Nice firm shifts and definitely a difference in power once you start moving. Also even less dropping back on hills. So I came out to a job today, it was about a 600km drive. I set cruise at 130km/hr as always and to my surprise my fuel mileage has gotten alot better. I now averaged 16.5L/100km. So I am guessing both the cover and programmer both had alittle to do with it. Thats just as good as what I was getting in my 5.3L. I am hoping with an intake and exhaust it will even get better!!

 

Believe me, exhaust does NOT give you better mileage. If you like V8 noise like I do, your mileage will get much worse!

[WilliamsVMAX]

Believe me, exhaust does NOT give you better mileage. If you like V8 noise like I do, your mileage will get much worse!

 

How do you like the GM Catback exhaust. I was thinking about it but I can get a better deal on magnaflow over $100 dollars cheaper.

[ChrisNJ]

Not to be a jerk, just curious. But assuming you bought these two items just for mpg gains? What's the payback time? If you bought the cover just for needing a cover, then mpg gains are just a bonus, and could in affect pay for the cover, in time.

 

 

Well its like this. I bought the cover because I needed a cover, just sick of all the snow getting in the back. As for the SC Flashpaq I obviously bought it for the power increase. And to be honest I am not worried about fuel mileage, I drive a 6.0L with a 4.10 rearend. On average I am at the pump every 4 days when I am home. When I am on the road working I am probably at the pump 2-3 times in a single day. If I was worried I would of bought a car. I put between 60-70,000k on my truck a year so getting better fuel mileage is a bonus and it will definitely pay for itself.

 

 

I didn't think you cared much about mpg, that's why I was curious about the first post. But of course if it gets better, then it's all good. Love that dark silver color.

[asilverblazer]

I am probably at the pump 2-3 times in a single day.

 

Geez, what do you do? If that was me I get about, 330 miles to a tank of gas. So that would mean I was driving at least 660 miles or 990 miles in one day. If it were all highway at 70 miles per hour, that means 9.5-14 hours a day driving. How do you have time to do any 'work' once you get there?

 

Unless your job is the driving, like a hot shot driver, taxi, etc...

[sonjaab]

All you folks that live in the great frozen north also have to remember that

we get the winter blend gas that also gives us the benefits of faster/easier

cold starts AND LOWER mpgs !!!!!!!!!!!!!!!!!

[WilliamsVMAX]

Geez, what do you do? If that was me I get about, 330 miles to a tank of gas. So that would mean I was driving at least 660 miles or 990 miles in one day. If it were all highway at 70 miles per hour, that means 9.5-14 hours a day driving. How do you have time to do any 'work' once you get there?

 

Unless your job is the driving, like a hot shot driver, taxi, etc...

 

I work in the oil patch. So I do alot of driving to get to the rig. Could be anywhere in Alberta, BC or Sask. I have drove as little as 100km to work and as much as 1800km one way to work.

[punmax]

When I picked my truck up, it only ate a half tank of gas. Trip was 505 kilometers. I was very happy

[marko]

I usually get about 17.5L/100km on cruise going 130km/hr on the highway, and I cannot get any better than that. City driving is even worse at about 18.5L/100km. So a few days ago I had a new Truxedo cover installed, and I bought a Superchips Flashpaq Programmer. I programmed the truck to the performance tune and I find it pretty good. Nice firm shifts and definitely a difference in power once you start moving. Also even less dropping back on hills. So I came out to a job today, it was about a 600km drive. I set cruise at 130km/hr as always and to my surprise my fuel mileage has gotten alot better. I now averaged 16.5L/100km. So I am guessing both the cover and programmer both had alittle to do with it. Thats just as good as what I was getting in my 5.3L. I am hoping with an intake and exhaust it will even get better!!

 

I went from Fernie to Calgary last Sunday, and was doing 12.5L/100km on Highway 22 on average, at 120-130. And I have 4.10 gears! I don't know why - I have the Corsa exhaust and a K&N77 intake, and a Superchips handheld, and burn premium gas. I have double and triple checked but the mileage is just that good. I wonder why your 5.3 wasn't similar?

[WilliamsVMAX]

I went from Fernie to Calgary last Sunday, and was doing 12.5L/100km on Highway 22 on average, at 120-130. And I have 4.10 gears! I don't know why - I have the Corsa exhaust and a K&N77 intake, and a Superchips handheld, and burn premium gas. I have double and triple checked but the mileage is just that good. I wonder why your 5.3 wasn't similar?

 

 

WOW..that is good I never knew a truck could get such good gas mileage. Mileage like that sounds like a 6cyl...Don't get me wrong I did get good mileage with my 5.3L, but I never seen anything better than 15.8L/100km. Im also never light on the pedal. With my 6.0L I am always topping out passing people, and I always walk on it at the lights...Maybe that has something to do with my bad fuel mileage...lol