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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

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Old Feb 24, 2008 | 07:14 AM
  #16  
goneinsixty's Avatar
goneinsixty
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looks like I will go with the turbo back cat delete. Should I use a 3.5" down pipe or 4" ? It seem by what has been said in the past that the 3.5" will fit better.
 
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Old Feb 24, 2008 | 07:40 AM
  #17  
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Green_Monster
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Like I said I saved a few $$ and did not do the turbo back ( must be a Yankee thing or is it called just being cheap :P) Any ways from all that I read prior to doing mine the 4" is very tight and you will most likely have to modify the firewall or DP to get it to fit without hitting anything. The 3.5" goes in in about 30-45 min from what I read. Also the oem DP needs a good whack from underneath to get it free.
 
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Old Feb 24, 2008 | 08:00 AM
  #18  
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goneinsixty
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Thumbs up

Green,

Guess I shouldopen my eyes. Just went back and read your other post. thanks for responding.
 
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Old Feb 24, 2008 | 08:04 AM
  #19  
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no problem its Sunday in the AM........ZZZZZZZZZZZZZZZZZ
 
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Old Feb 24, 2008 | 11:37 AM
  #20  
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Green, you mean your MPGs went UP? You just said they went...
 
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Old Feb 25, 2008 | 07:45 AM
  #21  
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cartman

oops I forgot a few words in my other post. My MPG's went from 13.5 to 15.1. So they went up sorry for not typing what I meant to say. I am on the same page as you.
 

Last edited by Green_Monster; Feb 25, 2008 at 07:47 AM. Reason: oops
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Old Feb 25, 2008 | 07:54 AM
  #22  
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I got an instant 2MPG increase in fuel ecomomy
 
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Old Feb 25, 2008 | 08:37 AM
  #23  
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I just checked Nevada's DMV site and it states: "Light duty diesel vehicles undergo testing on a dynamometer. The technician will also perform a test for visible smoke and a visual inspection of the emissions components."
I know there are people in Nevada with straight pipes, how do they get away with it?
 
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Old Feb 25, 2008 | 05:08 PM
  #24  
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I give up................... There is no lag in these turbo's.

Originally Posted by cartmanea
Reducing restrictions after the turbo will make it perform more efficiently and reduce spool time. There is no way for it to affect it differently. This is from a fluid dynamics standpoint, so unless we are wrong about the basics of physics...
 
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