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6.4L Performance Parts Discussion What has or has not worked for you?

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  #1  
Old 09-05-2008, 07:53 PM
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Looking for MPG's

My 08 came out with 20" wheels..first few tanks 9.5mpg...took of 20" wheels and put my 17x10's that I kept off of my 06 when I traded...mpg's went to 11.5....purchased a superchips cortex mpg's went to 14..now I have 17k miles on truck mpg's are staying 14.5-15...what can I do now to see a increase? Would the Spartan Tuner do better? Advice please....THANKS
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  #2  
Old 09-05-2008, 08:59 PM
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Yes the spartan tuner will help out your fuel economy. It'll get rid of that big ol'e DPF back there, and will shut off the EGR on the higher tunes. IMO its worth it.
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Old 09-05-2008, 09:09 PM
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i just put the spartan on mine. nothin else except the tuner and cat/dpf delete. i run the 210 tune. everyone says they get better milage out of the 250. i get between 19.5 at 80 mph and 23 at 70mph highway. i haven't had it long enough to know what it is around town but from what everyone else is saying you're lookin at around 15 to 17.
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Old 09-07-2008, 12:32 PM
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Quote:
Originally Posted by valetcruiser View Post
i just put the spartan on mine. nothin else except the tuner and cat/dpf delete. i run the 210 tune. everyone says they get better milage out of the 250. i get between 19.5 at 80 mph and 23 at 70mph highway. i haven't had it long enough to know what it is around town but from what everyone else is saying you're lookin at around 15 to 17.
X2 for me also...
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Old 09-07-2008, 04:19 PM
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The Spartan get's great milege 20+ MPG hwy.
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Old 12-21-2008, 09:19 PM
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I'm still looking at an '08, and the poor mileage was hard to get past. Considering I'm getting 17-19 mpg in mixed city/hwy. I read the article on the cortex and was interested. But it still seems the spartan is a better choice.
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Old 12-22-2008, 03:59 AM
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The Cortex that I used in my 08 F150 shop truck with a 5.4 damn sure didn't help my gas mileage. I used the Cortex, a Banks air box and a Gibson exhaust,,,13.2 average running around town. The exact same thing it got totally stock.

I used the Spartan in my 08 F350 and didn't notice much of a gain in town,,but I took a road trip this past weekend and at 75 to 85 got right at 18 mpg running the 120 tune,,I haven't trip a road trip with the 210 tune yet, I kinda like the driveabliity of the 120 though,,,leaving that in for now as I'm gonna be dragging my boat down to the Key's for New Years.

Last edited by Slick02; 12-22-2008 at 04:05 AM.
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Old 12-22-2008, 04:13 AM
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If your looking for Mileage gains that are worth spending the money for most definately get the Spartan!!! I have 35's on my 08 with the Factory 20's and get 18.5 MPG @ 80 and 15 in the city all while having 550 RWHP on tap

Last edited by CobbsDieselPerformance; 12-22-2008 at 04:34 AM.
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Old 12-22-2008, 04:48 AM
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Dang it sucks hearing yalls mileage, i went on a road trip this weekend set the cruise on 70 and got 11 mpg on interstate, i have 08 F-250 4dr 4x4 with 3" leveling kit on front and 35" tires on 20" rims, also DPF delete, no muffler or cat, and SCT w/dpf delete tune, i guess if SCT doesnt hurry with the custom tuning i will be buying a Spartan
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Old 12-22-2008, 04:52 AM
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Quote:
Originally Posted by Gas Sucks View Post
Dang it sucks hearing yalls mileage, i went on a road trip this weekend set the cruise on 70 and got 11 mpg on interstate, i have 08 F-250 4dr 4x4 with 3" leveling kit on front and 35" tires on 20" rims, also DPF delete, no muffler or cat, and SCT w/dpf delete tune, i guess if SCT doesnt hurry with the custom tuning i will be buying a Spartan
Just the other day I heard it was 1-2 weeks away, LOL inside joke!
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