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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 09-08-2014, 10:13 PM
mcampbell mcampbell is offline
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Default Bad MPG's, help!

Alright guys, I need some help. My 1500 sport has been getting increasingly worse gas mileage no matter how carefully I drive, I'm down to about 13 right now. What is the best aftermarket suggestion you have to help off set that? Anything would help. Thanks y'all.
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Old 09-09-2014, 09:55 PM
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Chris b Chris b is offline
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how many miles do you have on the truck? Sounds like you might need to change pulgs
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Old 09-09-2014, 10:32 PM
mcampbell mcampbell is offline
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Just hit 30k. Someone else on here mentioned plugs. Sounds like that will be my first try. Thanks!
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Old 09-09-2014, 10:53 PM
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Is most of your driving in-town or a mix of town/interstate?
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Old 09-10-2014, 08:04 PM
mcampbell mcampbell is offline
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Town/highway
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Old 09-10-2014, 08:25 PM
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I've been getting the same thing... 13 city, truck has 53k on the clock and bone stock
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Old 09-15-2014, 06:51 PM
Marc-RT Marc-RT is offline
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Buy a Prius lol jk
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Old 09-15-2014, 07:08 PM
Osage91 Osage91 is offline
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My gear swap from 3.55 to 3.92 actually increased my mileage by almost 2mpg. Don't know how that worked out but it's a fact. If you have 3.55's that may be your problem.
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Old 09-19-2014, 03:55 PM
89gtcs 89gtcs is offline
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Change plugs and PCV valve and clean the throttle body first. Leave your battery unplugged during this procedure to reset the adaptive learning on the PCM. Check air filter to make sure it's not clogged. Or just replace it anyway - they are cheap.
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Old 09-25-2014, 12:33 PM
JoeN333 JoeN333 is offline
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cheap gas also gives you crappy gas mileage. i use 89 octane. the truck calls for it but also states i can use 87. it just doesn't work out to good.

plugs and air cleaner also helps greatly
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