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Discussion Starter · #1 ·
:dunno:does any one knows whats the size of the down pipe in a 2004 6.0??? and whats the bigges downpipe you can use???:dunno: thank you
 

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Discussion Starter · #6 ·
:dunno:
4 inch if you port your cab. otherwise, you will have bad vibrations from your downpipe hitting your firewall. :thumb:
???? what do you meen PORT YOUR CAB???:dunno:
 

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Raging Lunatic
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The vendors on the board are your best bet-I think they are all great! How's that for political correctness?
I have used only 1 and not for exhaust, but you will get plenty of opinions!!:icon_ford:
 

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Raging Lunatic
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4 inch if you port your cab. otherwise, you will have bad vibrations from your downpipe hitting your firewall. :thumb:
Is there that much difference from 04 to 06?
 

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2015 F-250 Lariat
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well, I dont know what to tell ya. Make sure its a four inch. I have not seen one that doesnt rattle against the cab. I'm not here to argue. Good luck!
What I mean is, my 4' down pipe doesnt cause any bad vibrations.
 

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Raging Lunatic
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well, I dont know what to tell ya. Make sure its a four inch. I have not seen one that doesnt rattle against the cab. I'm not here to argue. Good luck!
No argument here, I just have not experienced that problem.
Good Luck!
 

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I put a 4" down pipe on my 07 and did not port or bend or anything... no vibes, plenty of room.
 
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