2010 6.4 mpg issues - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 4 (permalink) Old 04-20-2014, 05:14 PM Thread Starter
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2010 6.4 mpg issues

I have a 2010 f250 with the 6.4. Mods are dpf delete, egr delete, turbo back exhaust, intake , spartan tune running 275 early lock. I have 37" tires on 22" rims. Gearing has been changed from 355s to 411s. Now here's the problem, gradually I have noticed the mpg getting worse and power seems to be dropping as well. Looking for and advise or ideas here cause I'm stumped
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post #2 of 4 (permalink) Old 04-22-2014, 02:58 PM
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Re: 2010 6.4 mpg issues

Did you read the stickies.

What you're doing wrong: Big tires and higher (numerical) gear ratio.

I'm not at all suprised your MPG is going down.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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post #3 of 4 (permalink) Old 04-22-2014, 03:03 PM
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Re: 2010 6.4 mpg issues

Quote:
Originally Posted by Dave Whitmer View Post
Did you read the stickies.

What you're doing wrong: Big tires and higher (numerical) gear ratio.

I'm not at all suprised your MPG is going down.

, and on that tune you probably drive with a lead foot... which Is another cause of ur mpg decrease

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post #4 of 4 (permalink) Old 04-23-2014, 03:16 PM
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Re: 2010 6.4 mpg issues

Changing the nut behind the wheel (aka the driver) can make up for a multitude of sins.

I have a mild Swamp Donkey tune and I get about the same MPG as his MPG tune. I am a half-baked hypermiler (mostly I'm Sir Coastalot) and that might be why the performance tune and the MPG tune get the same MPG for me.

Having big tires and a numerically higher R/P ratio and visions of being Tony Stewart would lead to lower MPG.

2000 F-350 SC 4x2 6 speed
3.08 gears Gear Vendor Overdrive
Slammed 4"
Rugged Air Dam
315,000 miles
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