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99-03 7.3L Performance Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels Related To Performance And Longevity

5" downpipe

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Old 11-24-2009, 03:30 AM
wilke12V's Avatar
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Default 5" downpipe
getting ready to make my own 5" turbo back duals, well i dont know what to do about the down pipe, and i will not buy a different one, anyone have any ideas?
 
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Old 11-24-2009, 08:54 PM
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no turbo that fits your 7.3 has a big enough exhaust side that is close to 5 inches. try 3 or 3.5 inches
 
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  #3  
Old 11-25-2009, 01:34 AM
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You will not get nor need anything bigger then a 4" down pipe. There is just no reason for it.

The outlet on a stock turbo is 3.25" and even a H2e or a S400 have a 3.75 outlet... save yourself the headache...
 
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Old 11-25-2009, 04:44 AM
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what i was thinking was cutting the end of the dp that goes to the turbo and tapper to the 5" all i have is 5"
 
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Old 11-26-2009, 01:01 PM
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You can cut it under the truck where it runs past the tranny...
 
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