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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 04-05-2010, 03:16 AM
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Default best MPG's?

i have an 2007 QC 4.7 Flex Fuel and was wondering what speed on the higway people were getting the best MPG's?
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Old 04-05-2010, 08:56 AM
City Slicker City Slicker is offline
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Around 20 MPG is the ceiling for me. If I can get a nice draft, going downhill, things are better
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Old 04-05-2010, 12:16 PM
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I just got 10.2 l/100km or 23 mpg on my last trip
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Old 04-05-2010, 01:27 PM
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Sweet lol. im planing on pulling my wife Mazda Protege ( dont worry shes getting a new caliber lol) up from San Antonio Texas to Colorado Springs CO and was just wondering how much im gunna have to shell out lol
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Old 04-06-2010, 08:35 AM
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i get about 15 if i keep the rpm's at 2,000 or under!!
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Old 05-12-2010, 03:21 AM
GaryGtx GaryGtx is offline
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on a good long road trip i have seen my truck get 23 at it's best. but in town it's no bueno!! 15 at best in town
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Old 05-16-2010, 10:55 AM
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Driving 85% highway at a conservative 65mph I only can squeeze out 15.3. Just added a CAI so I don't have conclusive data yet to see if I'm getting any REAL gains out of it yet. 4.7 2006 4x4
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Old 05-22-2010, 11:10 PM
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I have been tracking my gas milage for mod reasons for what works and doesnt work, here is what I have been able to caculate so far. This is for a 2010 Ram 2500 5.7L TRX4 with 4.10 gearing, 1666 miles on it and no Mod's, yet.

Calculated
12.38
14.24
13.01

Computer reading
13.3
14.5
13.3

Difference
.92
.26
.39

calculated MPG overall Avg
13.21

Last edited by ttontis; 05-22-2010 at 11:13 PM. Reason: tabs didnt look right. changed format
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Old 05-23-2010, 11:03 PM
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Quote:
Originally Posted by DSPTYWCADET09 View Post
Around 20 MPG is the ceiling for me. If I can get a nice draft, going downhill, things are better
20 mpg is real good. does the throttle body spacer actually do anything? I hear so many mixed reviews I want to get one but i don't know if it's worth the money. Someone said that if I want to not spend much money to go somewhere and have like a machinist make me one or something. What's the best 3 gas mods you recommend from your experience with your 4.7? I have a 2004 Ram 1500 4.7L 5mt it's lightly modded. The only two gas saving mods are a magnaflow catback dual rear exit and truxport tonneau.
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Old 05-24-2010, 01:58 AM
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keeping it under 2000 rpm's has given me the best results... 15-17mpg depending on how much freeway driving i do.
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