H&S .31 *REDUCED FUEL MPG* - Ford Powerstroke Diesel Forum
6.7 Performance Parts Discussion 6.7 Performance Parts Discussion

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Old 04-27-2013, 07:38 PM
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H&S .31 *REDUCED FUEL MPG*

Since I downloaded the new .31 update my mileage has dropped drastically. I used to get just about 15mpg in the city, Now im @ 13.5mpg. Anyone else loose mpg? Also trucks feels slower & sluggish. Tranny is flawless.
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Old 04-27-2013, 08:18 PM
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I just put around 150 miles on the new .31 update. Turbo boost is down a little. Seems more controlled tho. No more 35 psi spikes. Havn't noticed mush change in mpg tho, seems about the same on mine. Truck is a little down on power tho. If it lets the turbo live longer im fine with that. Like you said, trans is perfect now.
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Old 04-27-2013, 08:35 PM
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Quote:
Originally Posted by Derek T444E View Post
I just put around 150 miles on the new .31 update. Turbo boost is down a little. Seems more controlled tho. No more 35 psi spikes. Havn't noticed mush change in mpg tho, seems about the same on mine. Truck is a little down on power tho. If it lets the turbo live longer im fine with that. Like you said, trans is perfect now.
Give it some time. I have about 1,xxx miles on it. Trucks runs great. I am running it on "TOW/50hp". I will try "STREET/100hp" next fill up.
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Old 04-28-2013, 09:27 AM
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Mine is actually up a little bit, but that may be due to warmer weather. I run on performance unless the GN is hooked to the truck
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Old 04-28-2013, 02:24 PM
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I did .31 update and mine is sill using the old wording. Mild, wild, hot. Is everyone seein this or just depends I we have a race tuner or a street tuner with the unlock?


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Old 04-28-2013, 03:04 PM
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Sounds like you didn't update firmwear
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Old 04-28-2013, 06:14 PM
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How do I update firmware?


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Old 04-28-2013, 06:16 PM
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Originally Posted by 31 YNOT View Post
Mine is actually up a little bit, but that may be due to warmer weather. I run on performance unless the GN is hooked to the truck
Mines up also. Went from 17.4 to 18.1. I run on stock mostly and perf only on longer trips.


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Old 04-28-2013, 11:02 PM
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Originally Posted by hw713713 View Post
How do I update firmware?


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scroll down to "update firmwear" on the main menu
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Old 04-29-2013, 06:39 AM
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I'll monitor my fuel burn. I haven't changed my driving style that much. Will keep an eye on it.
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