Poor mpg - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 06-11-2012, 04:14 PM Thread Starter
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Poor mpg

ok so I tried to get some before but was unable to. My truck is getting 12.5 unloaded, and 10 towing my boat(2800-3klbs) the truck is on 38's so I dont expect the 20 that some if you guys get but I'm not ready to give in and settle at what I'm getting. I recently just changed fuel filters and cleaned air filter throughly. Only thing else I have noticed about the truck is it every now and then had a slight surge at idle.
Please help me to figure something out.

03 F350 6.0 SRW 4X4 lariat

481hp 832tq

8" super lift 385/70r16 Toyo MT's
FatBoy traction bars
Durastroke stg1
MBRP 5" straight pipe
Custom tuned by Vivian "Looney Wild Track"
Edge Insight CTS
Zoodad mod
high idle mod
6.4 banjo bolts
Updated fuel pressure regulator (Blue spring mod)
EGR cooler delete
6K 55w HID's
6k 35w fog HID's
B&W turnover ball

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post #2 of 4 Old 06-11-2012, 04:19 PM
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maybe the truck needs to be reflashed to reflect the change in tire size?

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post #3 of 4 Old 06-12-2012, 01:27 PM
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That mileage sounds about right. That is about what I get as well.

2004 6.0 PSD, SCT tunes by Matt at Gearhead
New Heads, ARP studs, OEM headgaskets at 120,000
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post #4 of 4 Old 06-12-2012, 04:06 PM
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heck, i get 9


cut me some slack, its a work truck.
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