running on empty ( 2 way mpg report)

[Johnsabine2003]

made a trip this weekend and decided to see if the different power levels make a difference in fuel economy. trip was from Columbia, ms to Augusta, ga. and. back. I'm running the hot damn 300 tune with the s1L tranny tune. trip out was made totally in hot mode, trip back was in the no power mode. fuel was shell diesel with power service additive (gray bottle). both trips were straight station to station runs with no fiddling around. interestingly enough the trip back was about 9 miles shorter, go figure. cruise was set at a gps indicated 73 mph.

the numbers.
going. 569.4 miles @ 18.1 mpg hot tune
coming 560.1 miles @ 17.4 mpg no power tune

truck info. h&s mini maxx with cat/ dpf delete.




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[Johnsabine2003]

btw, I reset my lie-o-meter. before each run. at the end of the trip out it read 23.9 mpg and on the return leg it read 23.4 mpg. my actual mileage is figured using fuelly.com


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[Johnsabine2003]

One more note: Last time I made this run unloaded was before the tuner and delete and I got 15.9 mpg.


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[KoalaCowboy]

Considering you are going down in altitude on the way to GA and climbing back up (not much, but enough) on the return, I'd say your fuel economy numbers were more or less even.

Not bad considering all things!

(what mods does your truckhave, for frame of reference? I'm still in research mode [plus getting my bank account back into a happy state, lol] but will definitely be doing mods to my truck when able).

[Johnsabine2003]

actually there's only about 150 feet of altitude difference between the 2 towns so for every up there's just about an equal amount of down. as I stated in an earlier post I have a minimax and the EGR and DPF delete. I did forget about a massive traffic slowdown just west of augusta on interstate 20 and that could've had some effect on the return trip fuel mileage.


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[KoalaCowboy]

Originally Posted by Johnsabine2003

actually there's only about 150 feet of altitude difference between the 2 towns so for every up there's just about an equal amount of down. as I stated in an earlier post I have a minimax and the EGR and DPF delete. I did forget about a massive traffic slowdown just west of augusta on interstate 20 and that could've had some effect on the return trip fuel mileage.


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Wow...only 150' of altitude diff? LOL, I withdraw my statement about altitude (lol).

What exhaust are you running? Stock with DPF/EGR delete or aftermarket?

[Johnsabine2003]

I'm really glad to get the extra gas mileage but I'm also very glad to get the emissions crap off of my truck. in the first week in a half after getting my truck back from having a new crate short block and installed the world level went from full to way above the top of the dipstick mark. after draining and refilling I figured that about 3 quarts of fluid had been added to the crankcase oil from somewhere. since installing the tuner and doing the EGR DPF delete the oil level hasn't moved.


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[Johnsabine2003]

use your best common sense to decode the post above. That's what I get for letting Siri do my typing and not proofreading it first.


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[KoalaCowboy]

Originally Posted by Johnsabine2003

use your best common sense to decode the post above. That's what I get for letting Siri do my typing and not proofreading it first.


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I hear ya. Part of why I haven't bought a 4S yet. Want Apple to fine-tune all that stuff and the 4S doesn't have that much above the 4, so I'll wait til the iPhone 5 comes out.

Part of my issue is that in the front-range area of CO, we 'do' have emissions testing and I have to figure out what others with the 6.4 are doing to be compliant / pass emissions but get rid of that damn DPF...

[Johnsabine2003]

Is it random testing or annual ?


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