Spartan MPG and Such - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 10 (permalink) Old 07-22-2010, 02:39 PM Thread Starter
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Spartan MPG and Such

Alright first off, just got my truck back with the 310 tunes, but have only been running the 250 for now to give the truck a little break in period, but let me tell you, i am HIGHLY IMPRESSED! Its like a totally different motor with this tuner, its worth every dime, Couldnt be happier

But im wondering which tune is best for long drives and for MPG?

and also, whats the best fuel additive for long runs?

Thanks.

-2008 Ford F250 King Ranch-
-6" Fabtech Lift-
-20" Eagle Alloys Powdercoated-
-37" Pro Comp Extremes-
-Spartan 310 Tuned-
-AFE Stage II Intake-
-AFE 4" Straight Piped Exhaust, 8" MBRP Black Stack-
-Recon Smoked Cab Lights-
-Smoke Tail Lights, Side Markers, 3rd Brake-
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post #2 of 10 (permalink) Old 07-22-2010, 03:51 PM
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No first hand experience, but from what ive read up on the higher the tune the better the fuel mileage

2010 F250 Lariat FX4 w/Sync.. Everything but nav and sunroof.. Little bit of IDP to help it out
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post #3 of 10 (permalink) Old 07-22-2010, 05:30 PM
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Our F-450 gets the best milage by far on the 310 tune

2003 Dodge 2500 Crew cab long bed auto-currently in the shop
1996 Dodge 3500 single cab dually 4x4 auto with 50,000 original miles
1991 Dodge 350 srw 4x4 nv4500 non-intercooled... some pump work
Allis-Chalmers 210 Altered Farm Stock Pulling tractor.

Hers-2010 Ford F-450 King Ranch 4x4 Spartan and aFe
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post #4 of 10 (permalink) Old 07-22-2010, 09:22 PM
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310 is best for milage and by far the most fun to drive!

08 F250 CCab Lariet 4x4 3.73 Loaded w/ sunroof Spray in Bed liner, bed cover, S & B intake,5" downpipe back Magnaflow, Spartan 275& 310 w/Spartan TCM Mickey Thompson 35 12.50 20 Baja ATZ's
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post #5 of 10 (permalink) Old 07-22-2010, 10:31 PM
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Did you go with there DashDaq? If so how do you like it?
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post #6 of 10 (permalink) Old 07-22-2010, 10:54 PM
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Originally Posted by mowtown View Post
Did you go with there DashDaq? If so how do you like it?
That is all we offer as a tuning device.

To the OP, typically you will see the best fuel mileage with the 275 and 310 tunes. That is if you can keep your foot out of it long enough.

Jeff Dodd - www.SpartanDieselTech.com
Email - [email protected]

2008 Ford F-250 CC/SB
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post #7 of 10 (permalink) Old 07-24-2010, 04:12 AM
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Best I've seen was 27MPG (comp reading) doing 65MPH down straight, flat road @ about 2500ft above sea level running the 275.
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post #8 of 10 (permalink) Old 07-24-2010, 01:50 PM
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Originally Posted by FXFer View Post
Best I've seen was 27MPG (comp reading) doing 65MPH down straight, flat road @ about 2500ft above sea level running the 275.
No offense, but unless you "hand calculate" your mileage, numbers like this are useless. That's why we call the computer read-out the "Lie-O-Meter".

The higher the "tune", the more it lies.
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post #9 of 10 (permalink) Old 07-27-2010, 03:24 AM
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Quote:
Originally Posted by Truckmaniac View Post
No offense, but unless you "hand calculate" your mileage, numbers like this are useless. That's why we call the computer read-out the "Lie-O-Meter".

The higher the "tune", the more it lies.
Yes, Hence the "Comp Reading" part. Anyway, just finished a 2600km drive from the Yukon back to Alberta, Up and down the sides of mountains with the 250 tune averaging 2300RPM. My average "Hand Calculated" MPG was just over 17. pretty good IMO.
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post #10 of 10 (permalink) Old 07-29-2010, 05:37 AM
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I'm getting 14.5 mpg in city driving and 11-11.5 towing 13,500 pound at 72-75 mph on the hwy with the 250 tune (truck info is below). The hwy mileage was done a week ago while on a 1600 mile trip from Atlanta, GA to Joliet, IL. This was a good mix of hills in North GA, TN and KY and then flat land in IN and IL. I pulled a 6% grade in TN at 70 mph in 92 degree heat and never saw an EGT above 1100. I'm very impressed with the larger tune and so far I've picked up approx 2 mpg in the city and a little more then 1 mpg while towing over the 210 tune. While this may not sound like much it's HUGE when you pull a trailer 1000+ miles once a month and the savings quickly added up.

The Spartan Tunes are top notch and well worth the money!!!!

'08 F-350 Lariat - 6.4L Auto, Crew Cab, DRW, long bed, 4x2 and 4.10 gears.
'08 F-350 Lariat Racing - 13.63 @ 101.7 mph with a 2.24 60

Modifications include DOC/DPF delete pipe, S&B Intake and Spartan tuning.
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