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

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post #1 of 6 Old 11-08-2013, 03:31 AM Thread Starter
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Im planning on getting exhaust put on my 08 F250 6.4 Powerstroke, what would be the best idea. Some say dualed out with smaller pipe some say 6 inch all the way back or stacks. Any suggestions or what would be the best?
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post #2 of 6 Old 11-08-2013, 04:22 AM
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Ive never seen a 6" exhaust but anyways. There is really no difference after 4" besides sound and looks.

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post #3 of 6 Old 11-12-2013, 05:49 AM
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To be honest, duals are just for looks. I have 4" duals. There's no performance difference from them vs 4" single, I had that too. Anything larger than 4" isn't necessary for most street trucks. 5" or even 6" stackes aren't going to give you any perf. gain. Remember, your turbo outlet is less than 4", so you can hook up a sewer pipe to it, and it won't make any difference.

Here's a link to all our systems for the 6.4L
Diesel Exhaust Systems for 2008-2010 Ford 6.4L Powerstroke at DieselManor
And if you're looking for stacks..
Exhaust Stacks and Accessories at DieselManor

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post #4 of 6 Old 11-12-2013, 06:44 PM
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You won't notice a bit of difference in performance or sound if you replace the exhaust from the DPF back. To get Hp gains you need to get rid of the DPF, which requires a tuner as well. You will notice a huge Hp change with this upgrade. I ran the stock exhaust behind the DPF delete, and then ran an aftermarket exhaust, I didn't notice a bit of difference for sound or HP between the 2 set ups. Best thing to do for the exhaust, delete the DPF, you will notice a change in exhaust sound and a lot of performance. Save the $600 in the DPF back exhaust and sink that money elsewhere in the truck.

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post #5 of 6 Old 11-12-2013, 08:40 PM
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12" dual stacks.

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post #6 of 6 Old 11-15-2013, 01:13 PM
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4in TBE is all you need, bigger only for looks though.

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