There's a few thing switch it efi live with a good tuner and you could move to a smaller tires but I don't see that happening

 

No, I'm not interested in a smaller tire. I was just curious if there were any minor changes I could make to increase a little here and there. Cutting out muffler/headers? It has 4" exhaust right now. Or anything else, I'm new to the diesel world and just trying to learn.


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The more power you have the less you have to push the pedal hence better MPG, or at least thats what I like to tell my self....

EFI live helped mine a lot, big rims and tires took me back down to where I was at first though..

 

How much did the efi live help? I drive a lot if it's significant enough it would be worth it for me if I could sell the banks.


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much better with efi live and a good programmer, much worse with big ballon tires lol

 

hand calculated?

well- take the lift and tires off.

if you want to go the extra mile, get the intake, straight pipe, and economy tune.


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EFI Helped me now at 70mph 18.5 towing my light quad trailer, around 20 with camper on hwy, only about 10 hunting in 4x4 hills I was getting about 14 in tow and 16 hwy, so I am more than happy with the efi tune

 

If u get efi get the egr turned off
It helped big time on mine for mpg

 

I have the same lift running 35's, EFI tune with some other extras (in my sig) and cruising on the freeway (Maryland / PA area) at 68-72 mph I avg 20-23 mpg. That is gentle take offs and not driving like a fool, all hand calculated.

 

Run it on the highest level 6 or 7...try and keep your foot out of it and see if it goes up...

 

and 315/75's on a 6.5 rim!? idk about that lol

 

I would delete it, and get EFI live.

I got 12-13 mpg on the interstate with 33s.

I have EFI live now and I ca average 17 win my foot constantly in it.

 

Efi live and drive slow that's about it. An keep your filters fresh. Of topic but how are your Cv angles with that lift

 

Ditch Banks, they suck.

Go with a major tuner and convert to EFILive, you'll be far happier !!

 

Banks doesn't suck...all of these tunners have more power potential then banks but you run a hot tune on efi or anything your going to have smoke....haze or clouds, you will smoke....banks doesn't smoke even on a max effort tune...banks tunes are for the person that wants reliability not wheel smoking power...take a tour at banks r&d & you will understand.....they hold land speed record on a pickup....hold a 7.7sec rail car...and neither smoke...Navy SEALs have a twin 800hp duramax gofast boat...so my point is....its a great tuner but its what your looking for in your tuner... also banks makes custom tunes even for bigger turbos and inj....

 

My dad's 07 LBZ has banks in it and he has tons of problems with it
And on level 6 it does roll Coal
more than my EFI he also has terrible mpg

In my opinion get rid of the banks
All banks does is fool the ECM in your truck.

 

I average anywhere from 9-15 mpg, In my 08' LMM, it has 42k miles. It weighs 7700 empty and 8700 loaded and I only run 40 psi air pressure, it's been going like that since 25k miles. The 35's make a big difference on these I recon. My LLY did way better. So it's normal. I have good tuning and I drive hard and live in the hills. Going down south on flat ground I did around 16-19 mpg.

 

watching this for similar issues, just getting the efi set up so i am hoping for gains soon.

 

Before efi live

285/75r16 stock wheels I could average 17 @ 70 mph
305/55r20 20x10s I averaged 12-14mpg @ 70

AFTER EFI LIVE
305/55r20 I'm averaging 19 mpg @ 70 mph. So to anyone on the fence about efi or the disbelievers we have thinking their box tuners are the holy grail, here's your proof