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Now I'm Strokin6.4Liters
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Discussion Starter #1
I'm trying to get some parts together for my 6.4 and I am trying to figure out what I should get for exhaust. I plan on running the spartan with an afe stage 2. I'm looking at the flo-pro straight pipe dpf delete exhausts and I don't know what i should get. Should I go with 4'' or 5''? Turbo back or down pipe back?
 

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I have the 4" Pro Flo downpipe back. The 08's have a 4in downpipe already. You will absolutly love the improvement!
 

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Now I'm Strokin6.4Liters
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2,447 Posts
Discussion Starter #3
Oh ok i didn't know they already had a 4in downpipe
 

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i have 4" down pipe with 5" after dpf delete to 7" single stack and LOVE IT
 

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Now I'm Strokin6.4Liters
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2,447 Posts
Discussion Starter #5
Does it feel like it takes a while to for the turbos to spool up with the 5''?
 

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I didnt really notice a big difference as far as turbo lag from stock to where my truck is now. its like a guessing game, "how much is this goin to spin once turbos boost up, casue there is a cop right there"
 

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the DP on the 6.4 is a double wall pipe, outside may be 4" but inside is not, probably more like 3 maybe 3.25"

I would go with a 5" turbo back..let me know if I can help you out.
 
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