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Exhaust 5.7 HEMI Exhaust Discussion

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Old 06-17-2011, 12:23 AM
5 speed 5 speed is offline
Dodge Ram Forum Newcomer
Join Date: Jun 2011
Location: Orlando FL
Posts: 16
Gender: Male
Vehicle: 2009 Ram 1500 Sport Crew
Trim Level: ST
Color: Silver
Engine: 2009-???? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
5 speed is on a distinguished road
Default Did anyone get an increase in MPG with their exhaust? How much?

Just curious if someone tracked before and after on an 09 or later Hemi and can report what system they have and is it just cat back, etc? Also if you can indicate if you have modified the intake. Thanks
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Old 06-20-2011, 06:07 PM
Posts: n/a

I can only report on a 2007 HEMI improvement.

I added an AFE Stage 1 intake, Magnaflow SO/DO muffler and a DiabloSport Predator. My hwy mileage is up 4+ mpg. My around town is up almost 3 mpg.

I don't drive it easy, either. If I cruised at 65 vs. 75, I might get better mileage. If I wasn't always on the throttle around town, ditto.

But for some reason I just can't do that...
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