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post #1 of 13 Old 03-01-2014, 06:13 PM Thread Starter
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More mods for more MPG

I have a 08 f250 with spartan tunes, S&B intake, MBRP turbo back exhaust, full EGR delete and CAC pipe. I'm looking for mods that will net me more MPG. I'll be commuting for school 2 months out of the year and will be doing about 300km a day.

I've looked into a small car but since I have a dick between my legs and a few speeding tickets a small car is out of the question.

I've got no issue spending money as long as its going to pick up some MPG
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post #2 of 13 Old 03-01-2014, 08:21 PM
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Other than methanol injection I don't think there will be anymore that you can do. Do a CCV mod as well? I made sure all emissions were deleted on mine.
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post #3 of 13 Old 03-01-2014, 08:46 PM
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Besides removing the bed and extra seats, and going to low rolling resistance tires there ain't a whole lot you can do besides change driving habits. My h&s shifts into 5th tq converter locked at 55 I believe so keeping. Rpms and boost low at 55-60 mph is where I would see my best. Your right foot is a big part in mileage. You can also try different tunes and see which does the best. They say for our trucks the high tunes are the best on mpg if you keep your foot out of it.

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post #4 of 13 Old 03-03-2014, 03:32 PM
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Gear vendor overdrive ...lol...but your looking at the price of a cheap used car.

Keep your foot out of it, take your time to get up to speed which keeps the boost down, take your tires up to the high end of the recommended air pressure, a/c off -windows closed on the highway, tailgate on and closed (box cover if you don't have one) ....that's about as cheap as it gets.....
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post #5 of 13 Old 03-03-2014, 04:19 PM Thread Starter
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How big of a difference will that gear vendor make? I have 373s and rev at about 2000 rpm doing 70 ish. If I could drop that down to 1500 I'd love to
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post #6 of 13 Old 03-03-2014, 05:54 PM
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Good thread to keep tabs on. I'm always interested in getting better mileage especially since I just did my deletes and tuner.

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Originally Posted by Trouble maker View Post
How big of a difference will that gear vendor make? I have 373s and rev at about 2000 rpm doing 70 ish. If I could drop that down to 1500 I'd love to
I'll trade you my 355s for your 373s. I like lower gears for towing haha

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post #7 of 13 Old 03-03-2014, 06:06 PM Thread Starter
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I want 37s eventually, yeh I know their going to kill mpg but thats later.
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post #8 of 13 Old 03-03-2014, 06:17 PM
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Wouldn't dropping the rpm down to 1500 be too low? I'd think you you be putting a greater load on the engine to keep yourself at 70 so you would be consuming more?
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post #9 of 13 Old 03-03-2014, 06:22 PM Thread Starter
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At 50mph my truck revs at 1100 rpm and it will climb any hill and only pull about 5psi more of boost then at 1500rpm. These trucks with simple mods are torque monsters. I can't see why 1500 would be to low
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post #10 of 13 Old 03-05-2014, 08:54 AM
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I've done a lot of cross country driving. Mods on my truck- spartan, MBRP 4", S an B, Air EGR, 8" lift on 37/1350's 22 inch rim.

Flat land with a tail wind I hold 10lbs of boost going 80. On the 210 tune I get 13.5-14.0 hand calculated. When I used the 250 tune that dropped to 11-12.

Any sort of head wind or hill climb my boost goes up dramatically. In the hill country I get around 10 mpg.
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