Mini maxx with 5 in turbo back - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 8 Old 11-16-2012, 01:23 PM Thread Starter
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Mini maxx with 5 in turbo back

okay so i have a minin maxx and a 5 in straight pipe straight from the down pipe. I guess i dont have the tuner set right bc im still only getting 16mpg its just a 250 and i read everywere i should be getting over 20 and its not throwing any codes so i really think i just have it tuned wrong idk. advice?
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post #2 of 8 Old 11-16-2012, 01:27 PM
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No I think it is right on track. That's about average. Now enjoy yourself.

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post #3 of 8 Old 11-16-2012, 05:25 PM
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In order to change your mpg, you have to change your driving habits. I only get 11-13 and mine is a deleted reg cab.

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post #4 of 8 Old 11-16-2012, 05:31 PM
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You can get 20 mpg if you coast downhill. I just drove 1,800 miles round trip averaging about 90 mph and I hand calculated 17.2 mpg. Tuned and straight piped.


2008 F-350 CCLB
2004 F-250 CCSB (sold)
1997 F-250 CCSB (sold)
1994 F-250 ECLB (sold)
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post #5 of 8 Old 11-16-2012, 05:36 PM
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With what size tires tho. Stock tires are best for mpg's. my 35"s and my tuned and deleted 6.4 only gets like 12. And that's babying it


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08 F-250 6.4 SCT livewire extreme, KEM Tuned, S&B CAI, Diamond Eye 4" DP, 5" DP back, Flo Pro IC Pipe, 6000K HID's, Edge Insight CTS, PMF Traction bars, 1.5" Newton leveling kit, 35x12.5r18 Toyo Open Country MT's, Dyno'd at 511 HP & 726 TQ 13.4 @ 99 mph
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post #6 of 8 Old 11-17-2012, 09:48 AM
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Quote:
Originally Posted by JOE_JOE View Post
With what size tires tho. Stock tires are best for mpg's. my 35"s and my tuned and deleted 6.4 only gets like 12. And that's babying it


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My tires are 325/60/20s. About 35.6" tall.


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post #7 of 8 Old 11-17-2012, 10:15 AM
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I wish I could see 16mpg. I can only get that on the highway. With everyday driving I'm lucky to see 12 mpg. Deleted, tuned with H & S, cold air intake, and running stock tires. I'd love to get great mpgs, but I really don't think it's going to happen.
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post #8 of 8 Old 11-17-2012, 01:15 PM
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16 mpg is very good fuel economy for the 6.4.

my truck is lovin this cooler weather (lower 60*s) and mild humidity. i got 16.9 mpgs for the whole tank 75% hwy driving towing the boat a couple times and hauling a few loads.




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