horrible gas mileage? SCT tuner? - Ford Powerstroke Diesel Forum
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post #1 of 43 Old 11-06-2008, 07:00 PM Thread Starter
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horrible gas mileage? SCT tuner?

Alright well heres the situation. About a month ago i purchased my SCT livewire with innovative tunes, 4" turboback, and a AFE stage 2 intake. I loved the extra power but my gas mileage dropped from about 22mpg highway stock to about 18-19mpg running the tuner. I checked and my fuel and oil filters were just replaced, tranny was serviced, and i had a bad vaccuem hose replaced but to no avail as it hasnt improved at all. Has any body else suffered a decrease in mpg with a tuner or is something just messed up with the truck? Any thoughts to what it might be? Me and Eric have been trying to troubleshoot it but as of yet we havent been able to figure it out. Thanks for any help.
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post #2 of 43 Old 11-06-2008, 07:03 PM
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Winter fuel is out. I lost easily 2 MPG from the summer fuel.

Early 99 F-350
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post #3 of 43 Old 11-07-2008, 12:05 PM
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Stay off the pedal, HA, HA,,,I find that my tuner acts much sooner then stock. You might be feeding it more fuel. A rocket needs much more fuel to take off the a VW.

2005, 6.0L, 6 Spd Std, 3.73 Rear End, F250SD, Extended Cab, 4 x 4 Long Bed. 2008 extension mirrors. GPS/TV/DVD/CD/Rear Cam/Radio installed, Max Energy programer by Hypertech, and Fuel Pressure Gauge. ScanGaugeII for 60 plus XGauges, and MPG. ELC Cat EC-1 Coolant, Pull a 39ft 15500Lbs 5th Wheel Camper Trailer. Mileage Avg is 20MPG, and pulling 12.6MPG.
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post #4 of 43 Old 11-07-2008, 02:11 PM
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i run my truck on extreme race, 19 around town 22-23 on the highway

but that is true, with winter fuel you should see a lost of about 1-3 normally

-Evan

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tuned by Eric
12.3

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Yeah, but your trucks a freak of nature...
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post #5 of 43 Old 11-07-2008, 04:22 PM
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It could be that you like the power.

Robert
09 F350 6.4 srw cc lwb 4x4
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post #6 of 43 Old 11-07-2008, 04:24 PM
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i run my truck on extreme race, 19 around town 22-23 on the highway

but that is true, with winter fuel you should see a lost of about 1-3 normally
how the heck do you get that kind of mpg's? i cant get that if i tried and my truck is 5500 pds.

05 Single Cab Short Bed
*03 Turbo*Stroked Injectors*AFE Stage 2*Small mouth Intake*SCT With Eric's Extreme Race*4.30 Gear*Best ET 13.5@99MPH*
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post #7 of 43 Old 11-07-2008, 04:25 PM
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I get 11mpg going downhill with a tail wind with the motor off. I would be peeing my pants if I got 19mpg.
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post #8 of 43 Old 11-07-2008, 04:38 PM
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im with ya my lie ometer tells me im getting 18-19 but everytime i hand calc. its like 15 or 16

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post #9 of 43 Old 11-07-2008, 04:38 PM
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I get 11mpg going downhill with a tail wind with the motor off. I would be peeing my pants if I got 19mpg.


mines bout the same

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post #10 of 43 Old 11-07-2008, 05:06 PM
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hell ya bockhold i'm getting 12 mpg and can not find out why

02 f-250 with
4" bully dog turbo back
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Tuned By Matt GHA
http://Gearheadautomotiveperformance.com
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