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Old 02-08-2013, 03:53 PM   #1
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Question Muffler Question

Getting ready for my first mod on the new truck, another 14 inch Magnaflow. What is the difference performance wise between a SI/DO and a DI/DO?

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Old 02-14-2013, 04:31 AM   #2
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i can tell you that with a DI/DO you are gonna have to cut out the factory y and run true duals, this is a good thing and will probably yield slightly better results power wise.
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Old 02-14-2013, 06:52 AM   #3
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If you go with the SI/DO you will need to replace the factory y-pipe with a free flowing one like the Magnaflow. The factory y-pipe is very restrictive. This is a pic of my Magnaflow y-pipe.


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Old 02-14-2013, 06:44 PM   #4
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Yes sir Hemibyrd, I just bought a 14 inch Magnaflow SI/DO with a Magnaflow Y-pipe off Ebay.
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OLD RIDE 2003 Dodge Ram Hemi 4x4 QC
Graphite Metallic SRT-10 Hood
Magnaflow Y-pipe and 14 inch Muffler Jet 180 Thermostat
K&N CAI Sonnax LP Booster
DS Predator 93 Tune TB Spacer
Taylor Shorties NGK 5306 Plugs
03 TMR Delete Mod
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Old 02-15-2013, 05:44 AM   #5
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Old 02-15-2013, 08:21 AM   #6
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Should work great.
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