gas mileage

[02_denali_guy]

jus wonderin what ppl r gettin for gas mileage on 6.0. have an 02 denali, have cai and cat-back exhaust. on board computer shows 12.3

 

[JKmotorsports]

Interesting.... I figured a mostly stock 6.0 would get better mileage than that. That's roughly what I get on mine, but I'm running a supercharger and bigger cam, not to mention a set of heavy 24" wheels.

 

[04SS99Denali]

14.0 in my yukon. 11.4 in the SS lol

 

[Max]

Sounds about right, our tcase eats up quite a bit of fuel but its worth it I usually sat around 12-13 stock but after efans, tune, intake, longtubes, and exhaust I generally get about 16-18 and 20 on the highway. Best thing you can do for mileage on these trucks is a set of 05+ efans (2+mpg) and a set of longtube headers. IIRC my injector duty cycle dropped a solid 10% after installing my AEM longtubes.

 

[chauncey0337]

2000 5.3 stock- 12mpg, 14 on a good day, usually a mix of highway and city driving.

 

[destroyer1362]

14.1 all city. I've only had my 04' nali for a little over a week though.

 

[uvacarbuff]

Pure city driving I can't get better than 12.2 mpg.

 

[My01yuk]

14.1 all city. I've only had my 04' nali for a little over a week though.

Did I miss the pics of your 04?

5.3 01 4wd yukon. Last tank got 12.3, that's the lowest it's been in a while and that was all city driving. I usually average 13.0-13.5 city driving on 22's.

 

[blueflamed03]

12 ish in town, 15-17 on highway.

 

[destroyer1362]

Did I miss the pics of your 04?

Sorry to thread jack but, only have one pic for now: http://tahoeyukonforum.com/forum/showthread.php?t=29039&page=5

 

[Diggerdan11]

My Tahoe gets 12 around town after i replaced the Cats, before it was getting 10. But mine is just the 5.3. I have never really taken it on the highway to see what the Highway MPGs were

My Silverado SS gets 12-13 around town. It of course has the ** 6.0, and I have a tune, intake and exhaust. I get 16-17 on the highway.


Makes me miss my 01 5.3 Silverado. I was getting 17 around town and as high as 22 on the highway with a intake and tune

 

[Teqdogg]

15-16 city, 20-21 highway. In winter that drops 1-2 mpg

 

[andrewmoore13]

i have an 02 denali and i get 14.0 average.

i need efans.

 

[Sasquatch]

My 05 yukon gets right around 15.5 to 16 on a mix of city/highway.

I usually get a little better mpg on the highway but i`m usually doing 80-85 mph. If i slow down to 65-70 i get around 18-20.

I have a catback, cai and a blackbear 93 octane tune.

 

[abladeafficionado]

2001 Denali with 6.0L, stock. 14.0 mpg, 25% highway/ 75% city driving.

How difficult are e-fans to install and what is the cost? It'd give a mild performance boost (less load on engine) and should give a bit of milage. If I could get an extra 1mpg or so I'd be happy.

I've been thinking about a tune from Blackbear. I'm thinking a fuel economy tune, performance air filter, e-fans, and less WAO throttle moments should get me about 16.0 mpg in my driving. I don't think getting 2.0 mpg from those mods is too unrealistic. Has anybody tried those mods with any luck? Even if you have a 5.3L, it should still be a close enough comparison to give me an idea of what to expect.

I keep up with traffic, but rarely do more than 5 over unless on the freeway. At 18, the last thing my insurance needs is a ticket. Some tanks I get 11.0 mpg, and some I'll get up to about 15.2 mpg with my driving.

 

[Big Buttons]

02 burb 5.3 flexfuel just took it on a trip on highway between 70-85 i was getting 20mpgs in city i average 14

 

[bai78]

FWIW, my '02 Denali XL got 15.5-17.7 on the highway this past week. In the city is around 13.5-14.5.

At this time it is a bone stock LQ4.