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Old 11-06-2013, 11:07 PM
Hornet Hornet is offline
Dodge Ram Forum Senior Member
 
Join Date: Sep 2013
Location: Airdrie AB
Age: 54
Posts: 2,044
Gender: Male
Vehicle: 2014 RCSB 8sp/3.21 geared Ram
Trim Level: Sport lowered 4X4
Color: Flame Red
Engine: 2013-20?? 345ci (5.7L) Hemi V8 395hp 410lb/ft
Rep Power: 3
Rep:488
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I have the Magnaflow dual exhaust kit on my 2013 4.7, the truck lost precious bottem end torque,it gets it back above 4,000 rpm till it short shifts itself at 5600 rpm,but how often do you drive at those rpm's.
I'd do as suggested above,a decent single in/single out muffler on the stock 3" pipe.
3" pipe is lots big enough for a 4.7,the muffler leaves a bit to be desired though.
I've looked at swapping the Y pipe as it is a bit crushed.
Not sure there's enough exhaust flow from the little 4.7 to make the y-pipe a restriction though
I have the AirRaid CAI and a ported 78mm throttle body on mine,can't say as i'd spend the money again.
If i was doing it again,i'd knife edge the stock throttle body and build a ram air kit for the stock airbox,and keep close to a 1,000 bucks in my pocket,but that's only my personal opinion
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