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6.4L Performance Parts Discussion What has or has not worked for you?

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Old 04-25-2014, 04:02 AM
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Ok i need some help/ opinions

So I'm looking to do the exhaust on my truck I already deleted the doc/ dpf I was wondering should I do 5 inch dpf back exhaust or just do 5 inch turbo back
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Old 04-25-2014, 05:19 AM
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i would to DPF back if you already have dpf delete pipe. wont take you long to do at all. the downpipe on these 6.4 trucks is known to be a complete P.I.T.A. to change out. its best to do is you ever have the cab off. in the meantime i would suggest just doing dpf back. i did downpipe back on my truck and it only took me an hour and some change to do it all.
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Old 04-25-2014, 06:18 AM
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Turbo back ( spools better, less restrictive, egt's ) would be best, 4" downpipe - 5" exhaust if I were to do it over. They say 4" is sufficient enough & 5" is more for performance if any.. Changing downpipe is simple by just disconnecting everything & dropping downpipe as if it were to come out bottom of truck & from that point sawzall it out w/12" blade. I wish I would have added my downpipe b4 installing my exhaust the 1st time.

I believe I hear dpf back is just for looks? Good luck, Jayson.
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Old 04-25-2014, 07:36 AM
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Ok so I guess I'll probably just spend the money and get the 5 inch turbo back I just didn't know if a dpf back would be good enough or not
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Old 04-25-2014, 08:34 AM
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FYI the biggest down pipe you can get is 4"
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Old 04-25-2014, 10:39 AM
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I know it's just easier saying 5 inch turbo back instead of 4 inch downpipe 5 inch downpipe back
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Old 04-25-2014, 10:46 AM
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Gotcha. Just making sure
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