HELP !!!!!....Better MPG Spartan tuner - Ford Powerstroke Diesel Forum
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Old 03-02-2014, 05:07 PM
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Angry HELP !!!!!....Better MPG Spartan tuner

I have a Spartan tuner on my 6.4 powerstroke, it has been egr and dpf deleted with a s&b intake installed. I am trying every single tune on my Spartan and the best mpg I can get is 12.....help please!!!! love my truck but need better mpgs. I traded a 06 dodge dually that got 19 for this damn thing. I know it can get better...hell my 04 6.0 got 19.........!
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Old 03-02-2014, 08:36 PM
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Where are you from?
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Old 03-02-2014, 09:05 PM
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Quote:
Originally Posted by hlywd2 View Post
I have a Spartan tuner on my 6.4 powerstroke, it has been egr and dpf deleted with a s&b intake installed. I am trying every single tune on my Spartan and the best mpg I can get is 12.....help please!!!! love my truck but need better mpgs. I traded a 06 dodge dually that got 19 for this damn thing. I know it can get better...hell my 04 6.0 got 19.........!
Are those hand calced or are you going by the lie-o-meter? Unfortunately, a 6.4 will never get great mileage. One of the reasons is the emissions crap which you did remove. Weight of the truck, stingy heads (which means you have to run higher EBPs and boost), and compound turbos also don't help.

If you run a tune with aggressive timing (the 310 for example) and can resist the skinny pedal, you should get the best mileage.
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Old 03-03-2014, 05:01 AM
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yes it is hand calculated at the pump...I ran the 310 tune for a 2 days and it wasn't quite running right it felt like the injectors were failing, the power was cutting in and out.
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Old 03-03-2014, 06:11 AM
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Originally Posted by hlywd2 View Post
yes it is hand calculated at the pump...I ran the 310 tune for a 2 days and it wasn't quite running right it felt like the injectors were failing, the power was cutting in and out.
Was it defueling? If so, do you know what parameter was causing it to defuel?
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Old 03-03-2014, 06:14 AM
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i have no idea really what that is?!
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Old 03-03-2014, 06:16 AM
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im new to the 6.4 and 6.7. still learning them
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Old 03-03-2014, 07:39 AM
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Originally Posted by hlywd2 View Post
i have no idea really what that is?!
Defuel is what the truck's computer (PCM) does to protect itself. Spartan offers quite a number of different parameters you can set to trigger a defuel. For example, if you worried about your pistons, you could set the EGT defuel to 1450. If EGTs got 1450 or higher, the truck's computer will automatically cut back on fuel to lower the EGTs.
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Old 03-03-2014, 08:59 AM
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I thought Spartan did not offer adjustable defuel parameters.
floorboy likes this.
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Old 03-03-2014, 09:53 AM
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Originally Posted by lx5spd View Post
I thought Spartan did not offer adjustable defuel parameters.
I never ran a Spartan but I am pretty sure they do. As a matter fact, I am pretty sure they let you use EBP as a defuel parameter (which I would have loved with my old setup). PM Jeff if you want to confirm.
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