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Old 12-05-2007, 02:47 PM   eBay Motors   #1 (permalink)
duramaxiskilinit
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Bad MPG....

I'm getting about 12.5 MPG in my LB7... I know it should be better than that...could it be that i need a new fuel filter??
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Old 12-05-2007, 02:54 PM   eBay Motors   #2 (permalink)
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i lost almost 4MPG in the last 2 months so i'm not sure whats could be the winter fuel.
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My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP.
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Old 12-05-2007, 07:26 PM   eBay Motors   #3 (permalink)
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I would think it's the winter fuel also.
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05' Dmax LLY CC SB, 6in. Fabtech with Heavy duty tie rods,
35in. MICKEY ATZ's, 20in. KMC's,
6000K HID headlights & fogs,
PPE Hot Xcelerator, 4in straight exhaust, Afe stage II intake, Resonator block-off,
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PCV reroute courtesy of Tony Burkhard All Seasons Service
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Old 12-06-2007, 12:44 AM   eBay Motors   #4 (permalink)
duramaxiskilinit
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thats stupid haha. its not like fuel is cheap either!
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Old 12-06-2007, 06:23 AM   eBay Motors   #5 (permalink)
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i'm changing my Fuel filter today and see if it doesn't make a difference.
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05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP.
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Old 12-06-2007, 07:17 AM   eBay Motors   #6 (permalink)
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the winter fuel killed my mpg also. I've lost about 2.5 to 3 mpg in the last 2 months as well. i have change my fuel filter and have not noticed any change in mileage but maybe .5 mpg
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Old 12-06-2007, 11:13 AM   eBay Motors   #7 (permalink)
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Same here....I went down about 3-4 MPG due to winter fuel. I just changed my filter thinking that was the problem and I was wrong.
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Old 12-06-2007, 12:12 PM   eBay Motors   #8 (permalink)
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thanks for the feed back so i guess i'll leave the fuel filter in for a few more miles..
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I HAVE THE MEDAL


05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP.
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Old 12-06-2007, 06:52 PM   eBay Motors   #9 (permalink)
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I just changed my oil and fuel filter to try and get better mileage. I also have my evolution on economy and my computer still says 12.5 mpg. My friend has he same truck with similar mods and his say 20mpg. WTF?
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Old 12-07-2007, 12:05 AM   eBay Motors   #10 (permalink)
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Check and make sure your friend is properly calculating his fuel mileage, because trust me if he is getting 20mpg around town then we all want to know what he is doing.
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05' Dmax LLY CC SB, 6in. Fabtech with Heavy duty tie rods,
35in. MICKEY ATZ's, 20in. KMC's,
6000K HID headlights & fogs,
PPE Hot Xcelerator, 4in straight exhaust, Afe stage II intake, Resonator block-off,
PPE boost controller, aeroforce scan gauge
Killerbee Compressor Mouthpiece
PCV reroute courtesy of Tony Burkhard All Seasons Service
Upcoming mods: Lift pumps, Fully built tranny
On the Way: PPE intake manifold w/EGR delete
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